diff --git a/.circleci/config.yml b/.circleci/config.yml
index f6d2ae80a7..d265af2cb4 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -11,6 +11,9 @@ jobs:
       - checkout
       - restore_cache:
           key: dependency-cache-{{ checksum "yarn.lock" }}
+      - run:
+          name: install-apt
+          command: sudo apt-get install libusb-1.0.0
       - run:
           name: install-deps
           command: yarn install --frozen-lockfile
diff --git a/package.json b/package.json
index 3b9ed139c1..7f9fb58967 100644
--- a/package.json
+++ b/package.json
@@ -10,10 +10,10 @@
     "packages/*"
   ],
   "resolutions": {
-    "@polkadot/api": "^0.93.0-beta.3",
-    "@polkadot/api-contract": "^0.93.0-beta.3",
+    "@polkadot/api": "^0.93.0-beta.7",
+    "@polkadot/api-contract": "^0.93.0-beta.7",
     "@polkadot/keyring": "^1.4.1",
-    "@polkadot/types": "^0.93.0-beta.3",
+    "@polkadot/types": "^0.93.0-beta.7",
     "@polkadot/util": "^1.4.1",
     "@polkadot/util-crypto": "^1.4.1",
     "@types/styled-components": "4.1.8",
diff --git a/packages/app-accounts/package.json b/packages/app-accounts/package.json
index ed158f5528..4bfe493bbc 100644
--- a/packages/app-accounts/package.json
+++ b/packages/app-accounts/package.json
@@ -12,7 +12,7 @@
   "dependencies": {
     "@babel/runtime": "^7.6.0",
     "@polkadot/react-components": "^0.36.0-beta.12",
-    "@polkadot/react-qr": "^0.45.0-beta.8",
+    "@polkadot/react-qr": "^0.45.0-beta.12",
     "@types/file-saver": "^2.0.0",
     "@types/yargs": "^13.0.2",
     "babel-plugin-module-resolver": "^3.1.1",
diff --git a/packages/app-accounts/src/Account.tsx b/packages/app-accounts/src/Account.tsx
index 9a4106d76e..c6f9407e8c 100644
--- a/packages/app-accounts/src/Account.tsx
+++ b/packages/app-accounts/src/Account.tsx
@@ -33,7 +33,7 @@ function Account ({ address, className, t }: Props): React.ReactElement<Props> {
     const account = keyring.getAccount(address);
 
     setGenesisHash((account && account.meta.genesisHash) || null);
-    setIsEditable((account && !(account.meta.isInjected)) || false);
+    setIsEditable((account && !(account.meta.isInjected || account.meta.isHardware)) || false);
     setIsExternal((account && account.meta.isExternal) || false);
   }, [address]);
 
diff --git a/packages/app-accounts/src/Overview.tsx b/packages/app-accounts/src/Overview.tsx
index 1020cea8f7..618093d024 100644
--- a/packages/app-accounts/src/Overview.tsx
+++ b/packages/app-accounts/src/Overview.tsx
@@ -7,8 +7,9 @@ import { SubjectInfo } from '@polkadot/ui-keyring/observable/types';
 import { ComponentProps } from './types';
 
 import React, { useState } from 'react';
+import keyring from '@polkadot/ui-keyring';
 import accountObservable from '@polkadot/ui-keyring/observable/accounts';
-import { withMulti, withObservable } from '@polkadot/react-api';
+import { getLedger, isLedger, withMulti, withObservable } from '@polkadot/react-api';
 import { Button, CardGrid } from '@polkadot/react-components';
 
 import CreateModal from './modals/Create';
@@ -22,6 +23,19 @@ interface Props extends ComponentProps, I18nProps {
   accounts?: SubjectInfo[];
 }
 
+// query the ledger for the address, adding it to the keyring
+async function queryLedger (): Promise<void> {
+  const ledger = getLedger();
+
+  try {
+    const { address } = await ledger.getAddress();
+
+    keyring.addHardware(address, 'ledger', { name: 'ledger' });
+  } catch (error) {
+    console.error(error);
+  }
+}
+
 function Overview ({ accounts = [], onStatusChange, t }: Props): React.ReactElement<Props> {
   const [isCreateOpen, setIsCreateOpen] = useState(false);
   const [isImportOpen, setIsImportOpen] = useState(false);
@@ -54,6 +68,16 @@ function Overview ({ accounts = [], onStatusChange, t }: Props): React.ReactElem
             label={t('Add via Qr')}
             onClick={_toggleQr}
           />
+          {isLedger() && (
+            <>
+              <Button.Or />
+              <Button
+                isPrimary
+                label={t('Query Ledger')}
+                onClick={queryLedger}
+              />
+            </>
+          )}
         </Button.Group>
       }
       isEmpty={emptyScreen}
diff --git a/packages/app-contracts/package.json b/packages/app-contracts/package.json
index c2515604f1..d092740b5d 100644
--- a/packages/app-contracts/package.json
+++ b/packages/app-contracts/package.json
@@ -11,7 +11,7 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@babel/runtime": "^7.6.0",
-    "@polkadot/api-contract": "^0.93.0-beta.3",
+    "@polkadot/api-contract": "^0.93.0-beta.7",
     "@polkadot/react-components": "^0.36.0-beta.12"
   }
 }
diff --git a/packages/app-settings/package.json b/packages/app-settings/package.json
index ea0c10f723..985e6ff76d 100644
--- a/packages/app-settings/package.json
+++ b/packages/app-settings/package.json
@@ -12,6 +12,7 @@
   "dependencies": {
     "@babel/runtime": "^7.6.0",
     "@polkadot/react-components": "^0.36.0-beta.12",
-    "@polkadot/react-query": "^0.36.0-beta.12"
+    "@polkadot/react-query": "^0.36.0-beta.12",
+    "query-string": "^6.8.3"
   }
 }
diff --git a/packages/app-settings/src/General.tsx b/packages/app-settings/src/General.tsx
index 85ac1b2855..499c94b024 100644
--- a/packages/app-settings/src/General.tsx
+++ b/packages/app-settings/src/General.tsx
@@ -5,6 +5,7 @@
 import { AppProps, I18nProps } from '@polkadot/react-components/types';
 import { Option } from './types';
 
+import queryString from 'query-string';
 import React, { useEffect, useState } from 'react';
 import { Button, Dropdown } from '@polkadot/react-components';
 import { ActionStatus } from '@polkadot/react-components/Status/types';
@@ -18,7 +19,9 @@ interface Props extends AppProps, I18nProps {
   onStatusChange: (status: ActionStatus) => void;
 }
 
-const WITH_LEDGER = false;
+// check for a ledger=... string, acivate
+const urlOptions = queryString.parse(location.href.split('?')[1]);
+const WITH_LEDGER = !!urlOptions.ledger;
 
 const prefixOptions = uiSettings.availablePrefixes.map((o): Option => createOption(o, ['default']));
 const iconOptions = uiSettings.availableIcons.map((o): Option => createIdenticon(o, ['default']));
diff --git a/packages/apps/package.json b/packages/apps/package.json
index ed97e230e0..c266f4d5b3 100644
--- a/packages/apps/package.json
+++ b/packages/apps/package.json
@@ -12,10 +12,11 @@
   "contributors": [],
   "license": "Apache-2.0",
   "dependencies": {
+    "@babel/polyfill": "^7.6.0",
     "@babel/runtime": "^7.6.0",
     "@polkadot/react-components": "^0.36.0-beta.12",
     "@polkadot/react-signer": "^0.36.0-beta.12",
-    "@polkadot/ui-assets": "^0.45.0-beta.8",
-    "query-string": "^6.8.2"
+    "@polkadot/ui-assets": "^0.45.0-beta.12",
+    "query-string": "^6.8.3"
   }
 }
diff --git a/packages/apps/webpack.config.js b/packages/apps/webpack.config.js
index 80c0326a42..75cdf664cc 100644
--- a/packages/apps/webpack.config.js
+++ b/packages/apps/webpack.config.js
@@ -32,6 +32,7 @@ function createWebpack ({ alias = {}, context, name = 'index' }) {
     context,
     devtool,
     entry: [
+      '@babel/polyfill',
       `./src/${name}.tsx`,
       isProd
         ? null
diff --git a/packages/react-api/package.json b/packages/react-api/package.json
index f5c07e84b8..153f436856 100644
--- a/packages/react-api/package.json
+++ b/packages/react-api/package.json
@@ -31,7 +31,7 @@
   "homepage": "https://github.com/polkadot-js/ui/tree/master/packages/ui-reactive#readme",
   "dependencies": {
     "@babel/runtime": "^7.6.0",
-    "@polkadot/api": "^0.93.0-beta.3",
+    "@polkadot/api": "^0.93.0-beta.7",
     "@polkadot/extension-dapp": "^0.11.0-beta.5",
     "edgeware-node-types": "^1.0.10",
     "rxjs-compat": "^6.5.3"
diff --git a/packages/react-api/src/index.ts b/packages/react-api/src/index.ts
index 45c1238384..5014423737 100644
--- a/packages/react-api/src/index.ts
+++ b/packages/react-api/src/index.ts
@@ -5,6 +5,7 @@
 import Api, { api } from './Api';
 import ApiContext from './ApiContext';
 
+export * from './ledger';
 export * from './with';
 
 export {
diff --git a/packages/react-api/src/ledger.ts b/packages/react-api/src/ledger.ts
new file mode 100644
index 0000000000..ac2bc20eea
--- /dev/null
+++ b/packages/react-api/src/ledger.ts
@@ -0,0 +1,24 @@
+// Copyright 2017-2019 @polkadot/react-api authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { Ledger } from '@polkadot/ui-keyring';
+import uiSettings from '@polkadot/ui-settings';
+
+let ledger: Ledger | null = null;
+
+export function isLedger (): boolean {
+  return uiSettings.ledgerConn !== 'none';
+}
+
+export function clearLedger (): void {
+  ledger = null;
+}
+
+export function getLedger (): Ledger {
+  if (!ledger) {
+    ledger = new Ledger(uiSettings.ledgerConn as 'u2f');
+  }
+
+  return ledger;
+}
diff --git a/packages/react-components/package.json b/packages/react-components/package.json
index eee3732fa2..280b7281d1 100644
--- a/packages/react-components/package.json
+++ b/packages/react-components/package.json
@@ -13,10 +13,10 @@
     "@babel/runtime": "^7.6.0",
     "@polkadot/keyring": "^1.4.1",
     "@polkadot/react-api": "^0.36.0-beta.12",
-    "@polkadot/react-identicon": "^0.45.0-beta.8",
+    "@polkadot/react-identicon": "^0.45.0-beta.12",
     "@polkadot/react-query": "^0.36.0-beta.12",
-    "@polkadot/ui-keyring": "^0.45.0-beta.8",
-    "@polkadot/ui-settings": "^0.45.0-beta.8",
+    "@polkadot/ui-keyring": "^0.45.0-beta.12",
+    "@polkadot/ui-settings": "^0.45.0-beta.12",
     "@types/chart.js": "^2.8.5",
     "@types/i18next": "^13.0.0",
     "@types/react-copy-to-clipboard": "^4.2.6",
diff --git a/packages/react-components/src/CryptoType.tsx b/packages/react-components/src/CryptoType.tsx
index f03f81226a..2a5b59ce67 100644
--- a/packages/react-components/src/CryptoType.tsx
+++ b/packages/react-components/src/CryptoType.tsx
@@ -28,9 +28,11 @@ export default function CryptoType ({ accountId, className, label = '' }: Props)
         setType(
           current.meta.isInjected
             ? 'injected'
-            : current.meta.isExternal
-              ? 'external'
-              : current.type
+            : current.meta.isHardware
+              ? current.meta.hardwareType || 'hardware'
+              : current.meta.isExternal
+                ? 'external'
+                : current.type
         );
       }
     } catch (error) {
diff --git a/packages/react-signer/package.json b/packages/react-signer/package.json
index afa61948b0..93b00b9654 100644
--- a/packages/react-signer/package.json
+++ b/packages/react-signer/package.json
@@ -12,6 +12,6 @@
   "dependencies": {
     "@babel/runtime": "^7.6.0",
     "@polkadot/react-components": "^0.36.0-beta.12",
-    "@polkadot/react-qr": "^0.45.0-beta.8"
+    "@polkadot/react-qr": "^0.45.0-beta.12"
   }
 }
diff --git a/packages/react-signer/src/LedgerSigner.ts b/packages/react-signer/src/LedgerSigner.ts
new file mode 100644
index 0000000000..8f4e84f95c
--- /dev/null
+++ b/packages/react-signer/src/LedgerSigner.ts
@@ -0,0 +1,22 @@
+// Copyright 2017-2019 @polkadot/react-signer authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { Signer, SignerResult } from '@polkadot/api/types';
+import { SignerPayloadJSON } from '@polkadot/types/types';
+
+import { getLedger } from '@polkadot/react-api';
+import { createType } from '@polkadot/types';
+
+export class LedgerSigner implements Signer {
+  public async signPayload (payload: SignerPayloadJSON): Promise<SignerResult> {
+    const raw = createType('ExtrinsicPayload', payload, { version: payload.version });
+    const { signature } = await getLedger().sign(raw.toU8a(true));
+
+    return { id: 0, signature };
+  }
+}
+
+const ledgerSigner = new LedgerSigner();
+
+export default ledgerSigner;
diff --git a/packages/react-signer/src/Modal.tsx b/packages/react-signer/src/Modal.tsx
index e5ed0480e4..1416423ad1 100644
--- a/packages/react-signer/src/Modal.tsx
+++ b/packages/react-signer/src/Modal.tsx
@@ -23,6 +23,7 @@ import keyring from '@polkadot/ui-keyring';
 import { assert, isFunction } from '@polkadot/util';
 import { format } from '@polkadot/util/logger';
 
+import ledgerSigner from './LedgerSigner';
 import PasswordCheck from './PasswordCheck';
 import Transaction from './Transaction';
 import Qr from './Qr';
@@ -141,7 +142,7 @@ class Signer extends React.PureComponent<Props, State> {
       return null;
     }
 
-    const isExternal = this.isExternal(currentItem.accountId);
+    const { isExternal, isHardware, hardwareType } = this.isExternal(currentItem.accountId);
 
     return (
       <Modal.Actions>
@@ -174,9 +175,11 @@ class Signer extends React.PureComponent<Props, State> {
                     ? t('Scan Signature Qr')
                     : currentItem.isUnsigned
                       ? t('Submit (no signature)')
-                      : isExternal
-                        ? t('Sign via Qr')
-                        : t('Sign and Submit')
+                      : isHardware
+                        ? t('Sign via {{hardwareType}}', { replace: { hardwareType: hardwareType || 'hardware' } })
+                        : isExternal
+                          ? t('Sign via Qr')
+                          : t('Sign and Submit')
                 }
               />
             </>
@@ -262,9 +265,9 @@ class Signer extends React.PureComponent<Props, State> {
     );
   }
 
-  private isExternal (accountId?: string | null): boolean {
+  private isExternal (accountId?: string | null): { isExternal: boolean; isHardware: boolean; hardwareType?: string } {
     if (!accountId) {
-      return false;
+      return { isExternal: false, isHardware: false };
     }
 
     let publicKey;
@@ -274,12 +277,16 @@ class Signer extends React.PureComponent<Props, State> {
     } catch (error) {
       console.error(error);
 
-      return false;
+      return { isExternal: false, isHardware: false };
     }
 
     const pair = keyring.getPair(publicKey);
 
-    return !!pair.meta.isExternal;
+    return {
+      isExternal: !!pair.meta.isExternal,
+      isHardware: !!pair.meta.isHardware,
+      hardwareType: pair.meta.hardwareType
+    };
   }
 
   private unlockAccount (accountId: string, password?: string): string | null {
@@ -368,8 +375,6 @@ class Signer extends React.PureComponent<Props, State> {
   }
 
   private signQrPayload = (payload: SignerPayloadJSON): Promise<SignerResult> => {
-    console.error('signQrPayload', payload);
-
     return new Promise((resolve, reject): void => {
       this.setState({
         isQrVisible: true,
@@ -482,12 +487,15 @@ class Signer extends React.PureComponent<Props, State> {
     const params = [];
 
     if (pair) {
-      const { address, meta: { isExternal, isInjected, source } } = pair;
+      const { address, meta: { isExternal, isHardware, isInjected, source } } = pair;
 
       queueSetTxStatus(id, 'signing');
 
       // set the signer
-      if (isExternal) {
+      if (isHardware) {
+        api.setSigner(ledgerSigner);
+        params.push(address);
+      } else if (isExternal) {
         queueSetTxStatus(id, 'qr');
         api.setSigner({ signPayload: this.signQrPayload });
         params.push(address);
diff --git a/yarn.lock b/yarn.lock
index 59387d8eb3..b5ba664c6c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -695,6 +695,14 @@
     "@babel/helper-regex" "^7.4.4"
     regexpu-core "^4.5.4"
 
+"@babel/polyfill@^7.6.0":
+  version "7.6.0"
+  resolved "https://registry.yarnpkg.com/@babel/polyfill/-/polyfill-7.6.0.tgz#6d89203f8b6cd323e8d946e47774ea35dc0619cc"
+  integrity sha512-q5BZJI0n/B10VaQQvln1IlDK3BTBJFbADx7tv+oXDPIDZuTo37H5Adb9jhlXm/fEN4Y7/64qD9mnrJJG7rmaTw==
+  dependencies:
+    core-js "^2.6.5"
+    regenerator-runtime "^0.13.2"
+
 "@babel/preset-env@^7.0.0 < 7.4.0":
   version "7.3.4"
   resolved "https://registry.yarnpkg.com/@babel/preset-env/-/preset-env-7.3.4.tgz#887cf38b6d23c82f19b5135298bdb160062e33e1"
@@ -838,7 +846,7 @@
     core-js "^2.6.5"
     regenerator-runtime "^0.13.2"
 
-"@babel/runtime@^7.0.0", "@babel/runtime@^7.1.2", "@babel/runtime@^7.3.1", "@babel/runtime@^7.4.0", "@babel/runtime@^7.5.5", "@babel/runtime@^7.6.0":
+"@babel/runtime@^7.0.0", "@babel/runtime@^7.1.2", "@babel/runtime@^7.3.1", "@babel/runtime@^7.4.0", "@babel/runtime@^7.4.4", "@babel/runtime@^7.5.5", "@babel/runtime@^7.6.0":
   version "7.6.0"
   resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.6.0.tgz#4fc1d642a9fd0299754e8b5de62c631cf5568205"
   integrity sha512-89eSBLJsxNxOERC0Op4vd+0Bqm6wRMqMbFtV3i0/fbaWw/mJ8Q3eBvgX0G4SyrOOLCtbu98HspF8o09MRT+KzQ==
@@ -1167,6 +1175,79 @@
     "@types/istanbul-reports" "^1.1.1"
     "@types/yargs" "^13.0.0"
 
+"@ledgerhq/devices@^4.70.0":
+  version "4.70.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/devices/-/devices-4.70.0.tgz#db335f555851cd575edc9e08c4c7d8b468710d61"
+  integrity sha512-xgcPls2BJivdG4pK8l4RFBf0CaMUNApP0sb+Izr9OlwbOH9iyLcLL2XC9AJuvoHGO1DUkDrCM2TkXJIx3Ui+Xg==
+  dependencies:
+    "@ledgerhq/errors" "^4.70.0"
+    "@ledgerhq/logs" "^4.70.0"
+    rxjs "^6.5.3"
+
+"@ledgerhq/errors@^4.70.0":
+  version "4.70.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/errors/-/errors-4.70.0.tgz#3ec196ed8f1211ed2f4e84969c26e9e97a3a4bc0"
+  integrity sha512-XFFuVGJ34dhkIfqTUGudPvnSx3cRGuZ+oVr8lR4UFuc29TwDVjf1X4GJ5wQU4XUqS4rNe+I+Tq7BK7V1DFX9lQ==
+
+"@ledgerhq/hw-transport-node-hid-noevents@^4.70.0":
+  version "4.70.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/hw-transport-node-hid-noevents/-/hw-transport-node-hid-noevents-4.70.0.tgz#c2b235c5b80898b0f78fecc75a19421724a4def9"
+  integrity sha512-i+0zmxlpx+MtXAxJA/rr/M0j4wDDm8hRLu+Xq7dBLky7ANJernyR/Xkrgn0y0VFec20pWk3T00EyIZ3S3M2Uyg==
+  dependencies:
+    "@ledgerhq/devices" "^4.70.0"
+    "@ledgerhq/errors" "^4.70.0"
+    "@ledgerhq/hw-transport" "^4.70.0"
+    "@ledgerhq/logs" "^4.70.0"
+    node-hid "^0.7.9"
+
+"@ledgerhq/hw-transport-node-hid@^4.70.0":
+  version "4.70.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/hw-transport-node-hid/-/hw-transport-node-hid-4.70.0.tgz#7ded1ae6d5ad5bf06de1cceadc8480401eef303c"
+  integrity sha512-/KyfYoKLqnJwwRKf6t4oYaTWlUwF2u8+KdyIrPzDcBqCSgml6dYR9hPyem/R8xoHelmn1XuzCd0n5bBBeeNMsQ==
+  dependencies:
+    "@ledgerhq/devices" "^4.70.0"
+    "@ledgerhq/errors" "^4.70.0"
+    "@ledgerhq/hw-transport" "^4.70.0"
+    "@ledgerhq/hw-transport-node-hid-noevents" "^4.70.0"
+    "@ledgerhq/logs" "^4.70.0"
+    lodash "^4.17.15"
+    node-hid "^0.7.9"
+    usb "^1.6.0"
+
+"@ledgerhq/hw-transport-u2f@^4.70.0":
+  version "4.70.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/hw-transport-u2f/-/hw-transport-u2f-4.70.0.tgz#1f10465d7cab016f787c552d05aa48c6bd235a58"
+  integrity sha512-ttQtwdg/reTUWUwySwf13+3u3skr6/l3MaTFwxMri9H6sq+EicrcH+8pD74JtZ3gT/GhESskwGpo7QzfaO+YQQ==
+  dependencies:
+    "@ledgerhq/errors" "^4.70.0"
+    "@ledgerhq/hw-transport" "^4.70.0"
+    "@ledgerhq/logs" "^4.70.0"
+    u2f-api "0.2.7"
+
+"@ledgerhq/hw-transport-webusb@^4.70.0":
+  version "4.70.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/hw-transport-webusb/-/hw-transport-webusb-4.70.0.tgz#7fe27d06d6b5f6bd9f1499ed80b66d83a97c8f25"
+  integrity sha512-HxxSdYTXWLdgFPN51yKp6LKea4HJsE+Y0Y+YIbpD8toOhAz4G3trf8n0nHTagBaDGIWTK5JTXMFO2XTv4Gt4vg==
+  dependencies:
+    "@ledgerhq/devices" "^4.70.0"
+    "@ledgerhq/errors" "^4.70.0"
+    "@ledgerhq/hw-transport" "^4.70.0"
+    "@ledgerhq/logs" "^4.70.0"
+
+"@ledgerhq/hw-transport@^4.35.0", "@ledgerhq/hw-transport@^4.70.0":
+  version "4.70.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/hw-transport/-/hw-transport-4.70.0.tgz#2733b83c6d600f8d3c5ffb588d010e40b9d0bcc3"
+  integrity sha512-kl3TGlpy6iH3byVT+9Df9ObN3Ahi7O6eg8FHAWORO4jGUHROPiI8FYL03DTEvBXG5GqyKN1NfvvcKyC3N2dL2w==
+  dependencies:
+    "@ledgerhq/devices" "^4.70.0"
+    "@ledgerhq/errors" "^4.70.0"
+    events "^3.0.0"
+
+"@ledgerhq/logs@^4.70.0":
+  version "4.70.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/logs/-/logs-4.70.0.tgz#b5176430ccb5a81becce25fcbbd8afcfa91a4388"
+  integrity sha512-hyMppU1b2tBDRyKJiV71RnN51Tkkriv/7DHQF9thAmrwEDFmfmEwAQaS2VyeIogir0HD7aDcKg7DnHqgiWe/8g==
+
 "@lerna/add@3.16.2":
   version "3.16.2"
   resolved "https://registry.yarnpkg.com/@lerna/add/-/add-3.16.2.tgz#90ecc1be7051cfcec75496ce122f656295bd6e94"
@@ -1931,45 +2012,45 @@
     once "^1.4.0"
     universal-user-agent "^4.0.0"
 
-"@polkadot/api-contract@^0.93.0-beta.3":
-  version "0.93.0-beta.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/api-contract/-/api-contract-0.93.0-beta.3.tgz#7647b8419c142c7791a372f2a993febc654931d8"
-  integrity sha512-byPO8SS+P6pz3njvWzpqmxbSmOsP28Wa3pK/vvMboysf9S2Z70fhOwF9ZDQSj2wujD5ZOi3hKRCoERgc9h8obg==
+"@polkadot/api-contract@^0.93.0-beta.7":
+  version "0.93.0-beta.7"
+  resolved "https://registry.yarnpkg.com/@polkadot/api-contract/-/api-contract-0.93.0-beta.7.tgz#1b41572c58e4490ecb93b1b06f6ead6b01f49d69"
+  integrity sha512-i1vGfd7B+FvUHHeplKzq73GFSV0IkFX+aCIzSWS/dK5SZGlZH1q9hyoK62s2x1czSb87y4jK2mJXxVoLEuy7uA==
   dependencies:
     "@babel/runtime" "^7.6.0"
-    "@polkadot/types" "^0.93.0-beta.3"
+    "@polkadot/types" "^0.93.0-beta.7"
 
-"@polkadot/api-derive@^0.93.0-beta.3":
-  version "0.93.0-beta.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/api-derive/-/api-derive-0.93.0-beta.3.tgz#d15c351ec68866e9d036baadc077b159bede378e"
-  integrity sha512-oAlL5HrQXYq3EFvOalEB7EpYP+U27QIsgRZuDHKbYzwk5KTIe6LNy88XKFiw5hCG4M84adqF6Za+IPV18SE8lw==
+"@polkadot/api-derive@^0.93.0-beta.7":
+  version "0.93.0-beta.7"
+  resolved "https://registry.yarnpkg.com/@polkadot/api-derive/-/api-derive-0.93.0-beta.7.tgz#57c14722f641adc74d55706d7fd1a2f0f749fd2c"
+  integrity sha512-7LNkq/WGOvoyUin6yoOszQj2H8LA02OKqlWLSyDLHP5Ldag4JOjE6agHgwQgiRDwxn7tOZIKY+rniOlaiXDkTg==
   dependencies:
     "@babel/runtime" "^7.6.0"
-    "@polkadot/api" "^0.93.0-beta.3"
-    "@polkadot/types" "^0.93.0-beta.3"
+    "@polkadot/api" "^0.93.0-beta.7"
+    "@polkadot/types" "^0.93.0-beta.7"
 
-"@polkadot/api-metadata@^0.93.0-beta.3":
-  version "0.93.0-beta.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/api-metadata/-/api-metadata-0.93.0-beta.3.tgz#62e58e48a8a16d56517a88df08a62018f4ceaf89"
-  integrity sha512-c8gCFbO7h+3j/Msq0KwP3iX3FLaLdOJMEQAY/FcoWXiL0xE4bKHqH9EinBJhGje5YrGnLLt5ifPB0I2PKooDYw==
+"@polkadot/api-metadata@^0.93.0-beta.7":
+  version "0.93.0-beta.7"
+  resolved "https://registry.yarnpkg.com/@polkadot/api-metadata/-/api-metadata-0.93.0-beta.7.tgz#e152fe2f4678c72776ee0e565ac26dae5bc61a14"
+  integrity sha512-pkodoQisyJrYpfhvKAoTjiwKJt3TEjm3oKlnC2PDs6t+OFldRt2e2k9oybYl9upYhMyhsIeTUoIcxYEwzZ6VOg==
   dependencies:
     "@babel/runtime" "^7.6.0"
-    "@polkadot/types" "^0.93.0-beta.3"
+    "@polkadot/types" "^0.93.0-beta.7"
     "@polkadot/util" "^1.4.1"
     "@polkadot/util-crypto" "^1.4.1"
 
-"@polkadot/api@^0.93.0-beta.3":
-  version "0.93.0-beta.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/api/-/api-0.93.0-beta.3.tgz#6a1151de6dcc03732d27737de9128df028a74eda"
-  integrity sha512-uIx+xJAgfVdb0aqQipNhl+hECXvjh0EbzyYsSBl5xe0ke07jSkX3UrIiPMpms5MZjX6aIWhZiEVTweqpTl+M4A==
+"@polkadot/api@^0.93.0-beta.7":
+  version "0.93.0-beta.7"
+  resolved "https://registry.yarnpkg.com/@polkadot/api/-/api-0.93.0-beta.7.tgz#66c343b41115e46646a229e18418c1879d33405b"
+  integrity sha512-pkYJThrZFtU16IU1wg6NazsuYwLlmXCHzP/OlMMAWdIuC95aoo2YaYJf8FXvyw4LN+tNUX1I3dikP+IDr+rh/Q==
   dependencies:
     "@babel/runtime" "^7.6.0"
-    "@polkadot/api-derive" "^0.93.0-beta.3"
-    "@polkadot/api-metadata" "^0.93.0-beta.3"
+    "@polkadot/api-derive" "^0.93.0-beta.7"
+    "@polkadot/api-metadata" "^0.93.0-beta.7"
     "@polkadot/keyring" "^1.4.1"
-    "@polkadot/rpc-core" "^0.93.0-beta.3"
-    "@polkadot/rpc-provider" "^0.93.0-beta.3"
-    "@polkadot/types" "^0.93.0-beta.3"
+    "@polkadot/rpc-core" "^0.93.0-beta.7"
+    "@polkadot/rpc-provider" "^0.93.0-beta.7"
+    "@polkadot/types" "^0.93.0-beta.7"
     "@polkadot/util-crypto" "^1.4.1"
 
 "@polkadot/dev-react@^0.31.0-beta.8":
@@ -2068,10 +2149,10 @@
   dependencies:
     "@babel/runtime" "^7.6.0"
 
-"@polkadot/jsonrpc@^0.93.0-beta.3":
-  version "0.93.0-beta.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/jsonrpc/-/jsonrpc-0.93.0-beta.3.tgz#c241da07d2e8aeec9f84f7b399274792032f34a5"
-  integrity sha512-N2wvHQEgCzxmA3NJR3kGyVwz29UEefCJXPV0zUO76kJmf8seVgJ5Vyo8OUs7mQCF6B1pqjPdLrkUAU/44L2KOw==
+"@polkadot/jsonrpc@^0.93.0-beta.7":
+  version "0.93.0-beta.7"
+  resolved "https://registry.yarnpkg.com/@polkadot/jsonrpc/-/jsonrpc-0.93.0-beta.7.tgz#bb297b2c90855729e9b9a021bf2b01b85ccdebfc"
+  integrity sha512-gvV0RelF80r5bBRzDxSkxC9pfn4Mpa/WPr8od/igrw6Ayz9EvUU8BQOdyx8t+PFnkofcP+EGrBSbHRT/TGMmTw==
   dependencies:
     "@babel/runtime" "^7.6.0"
 
@@ -2084,14 +2165,14 @@
     "@polkadot/util" "^1.4.1"
     "@polkadot/util-crypto" "^1.4.1"
 
-"@polkadot/react-identicon@^0.45.0-beta.8":
-  version "0.45.0-beta.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/react-identicon/-/react-identicon-0.45.0-beta.8.tgz#03e362b5864b0ee41670e77da7c86aae7d9cc5b5"
-  integrity sha512-Nc0yPU4CV5prtob0AQ0J+PTA+O/OjFnXkyHuKlRqGFoTvlKc8s63ysCbcAVTHaUwQSbe7RndXVNwnQsNEhCbmQ==
+"@polkadot/react-identicon@^0.45.0-beta.12":
+  version "0.45.0-beta.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/react-identicon/-/react-identicon-0.45.0-beta.12.tgz#7552b118023b44f625bf8501d30dca2ebf8cf286"
+  integrity sha512-vjRBmxgcYKKvpl2Tv5bKs2B+F/W60XXdSAfsLOHm94csL/B4EMqEoezIlRN0kGNds30OHni0UgMU9LBFt9j+tQ==
   dependencies:
     "@babel/runtime" "^7.6.0"
-    "@polkadot/ui-settings" "^0.45.0-beta.8"
-    "@polkadot/ui-shared" "^0.45.0-beta.8"
+    "@polkadot/ui-settings" "^0.45.0-beta.12"
+    "@polkadot/ui-shared" "^0.45.0-beta.12"
     "@types/color" "^3.0.0"
     "@types/react-copy-to-clipboard" "^4.2.6"
     color "^3.1.2"
@@ -2099,35 +2180,35 @@
     react-copy-to-clipboard "^5.0.1"
     styled-components "^4.3.1"
 
-"@polkadot/react-qr@^0.45.0-beta.8":
-  version "0.45.0-beta.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/react-qr/-/react-qr-0.45.0-beta.8.tgz#94dadab87d0e865ce03c7c5fcdbfc89cc74b6dd4"
-  integrity sha512-6OrJNuN2kEC5Lyv7IN8Ra4Z+Nu0/yzh9G6I1owdY46ZDX9ds2toCIV4GzztbK5Bhsnx76HKGVdkPaazRXzlrPA==
+"@polkadot/react-qr@^0.45.0-beta.12":
+  version "0.45.0-beta.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/react-qr/-/react-qr-0.45.0-beta.12.tgz#d63517cba8e0b20ec56dbb099b4de5bdec7b4bfd"
+  integrity sha512-fFYaS63Mk+oKWr2U4Ww3sy/R4OUFDW2rGQ1TBmzHU74YUMoQyNM3BNO7tvNH15rG1fzLshXj8s8nzRbWgiRMjA==
   dependencies:
     "@babel/runtime" "^7.6.0"
     "@types/react-qr-reader" "^2.1.1"
     qrcode-generator "^1.4.3"
     react-qr-reader "^2.2.1"
 
-"@polkadot/rpc-core@^0.93.0-beta.3":
-  version "0.93.0-beta.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/rpc-core/-/rpc-core-0.93.0-beta.3.tgz#0e56aeb6fc43563af109ac02cc7532350785e6f8"
-  integrity sha512-aqVcp5JuY8tSHgWO+SBZPFXPy/rL3ydk0Oted7aLGNbz3kT2I5MprqHluwcuxdaGDghk+MWY7xRqaVg5ErAMvA==
+"@polkadot/rpc-core@^0.93.0-beta.7":
+  version "0.93.0-beta.7"
+  resolved "https://registry.yarnpkg.com/@polkadot/rpc-core/-/rpc-core-0.93.0-beta.7.tgz#41cc8fec60885961964b219a26842a556521f7b4"
+  integrity sha512-SchbJBhGJy+3444LKNWaMj41EGRuHuQJtkt4KvIlDzEWMrTWAgrWiyIgvbx/8KD7ZbH09nXk36JDxDm1sYWn1g==
   dependencies:
     "@babel/runtime" "^7.6.0"
-    "@polkadot/jsonrpc" "^0.93.0-beta.3"
-    "@polkadot/rpc-provider" "^0.93.0-beta.3"
-    "@polkadot/types" "^0.93.0-beta.3"
+    "@polkadot/jsonrpc" "^0.93.0-beta.7"
+    "@polkadot/rpc-provider" "^0.93.0-beta.7"
+    "@polkadot/types" "^0.93.0-beta.7"
     "@polkadot/util" "^1.4.1"
     rxjs "^6.5.3"
 
-"@polkadot/rpc-provider@^0.93.0-beta.3":
-  version "0.93.0-beta.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/rpc-provider/-/rpc-provider-0.93.0-beta.3.tgz#242a0e12ea346a54fd83fbd46cb79566e90225ea"
-  integrity sha512-/A386Bn9mmvpoulwMEMnJTEGAWI1m4+Wu5jaStVoWnVdueTm2zkNwswe4+ypkXDJGHbdRY5k3mmFepy6cGlJWQ==
+"@polkadot/rpc-provider@^0.93.0-beta.7":
+  version "0.93.0-beta.7"
+  resolved "https://registry.yarnpkg.com/@polkadot/rpc-provider/-/rpc-provider-0.93.0-beta.7.tgz#03a11c24c6ae2b0f33f471d2cf9175eee3b82409"
+  integrity sha512-sBqlgQ7Jx/tjzZI6Fkx1KsviPBX1xpGd3vHT0QBZjj6VIu5dp0I90UC7xOU9Zq2B6yE8TUGUcpy7zDyL+95GXQ==
   dependencies:
     "@babel/runtime" "^7.6.0"
-    "@polkadot/api-metadata" "^0.93.0-beta.3"
+    "@polkadot/api-metadata" "^0.93.0-beta.7"
     "@polkadot/util" "^1.4.1"
     "@polkadot/util-crypto" "^1.4.1"
     "@types/nock" "^10.0.3"
@@ -2142,10 +2223,10 @@
   dependencies:
     "@types/chrome" "^0.0.88"
 
-"@polkadot/types@^0.93.0-beta.3":
-  version "0.93.0-beta.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/types/-/types-0.93.0-beta.3.tgz#2a5843c35b3fb3369390e66236ff20968099b9fe"
-  integrity sha512-RlwhdtnQXq9yHgNwQJ2Rnl0RtklGucPFJE2in6gCNrvAE9V+KbJqXrwGtCqbt/CmGySTZclaL9yJ9Qzg1JgS1w==
+"@polkadot/types@^0.93.0-beta.7":
+  version "0.93.0-beta.7"
+  resolved "https://registry.yarnpkg.com/@polkadot/types/-/types-0.93.0-beta.7.tgz#c45d3aa2eff3082d8a45a9c0ec9fbbaa103e9008"
+  integrity sha512-WwvAcfFC0j4lqBskl1TsJ3AkfvFggdtcKtS0qvmBxzvJZsTP7mdbHYECBTnT6TmNRi142a67rOHh4x+/UkWb6Q==
   dependencies:
     "@babel/runtime" "^7.6.0"
     "@polkadot/util" "^1.4.1"
@@ -2153,39 +2234,45 @@
     "@types/memoizee" "^0.4.3"
     memoizee "^0.4.14"
 
-"@polkadot/ui-assets@^0.45.0-beta.8":
-  version "0.45.0-beta.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/ui-assets/-/ui-assets-0.45.0-beta.8.tgz#9a7b93147435a81be35e9c9ea079cbfac44510c9"
-  integrity sha512-kZciq3a6p69+SCxV/Gf7U6VHEslV8jhxVKMSZMLJV9YSCfEeI97/SB9V3OPRrTtBTF1f2YVUJwGq7gXkOvJ8BA==
+"@polkadot/ui-assets@^0.45.0-beta.12":
+  version "0.45.0-beta.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/ui-assets/-/ui-assets-0.45.0-beta.12.tgz#f0f89f1524291462637921554031b2958196d4e9"
+  integrity sha512-7eJq0w/ikKpZAYrKOvIHqLMCiuQ9lIvsu2o0VNTxkfUvZLPKUbhFFFHLjFyESl48bYdUIfgnqwIZ4bPRXeCHFw==
   dependencies:
     "@babel/runtime" "^7.6.0"
 
-"@polkadot/ui-keyring@^0.45.0-beta.8":
-  version "0.45.0-beta.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/ui-keyring/-/ui-keyring-0.45.0-beta.8.tgz#29c1e7491a910408b9684e81e83dc797dc71a992"
-  integrity sha512-Y/EezRsu1j2uwPwYsoCJA0LlSwuSIrBA5u/VsaCwx520OWH5sV0Wm5UvzvM7hS7l3Z/FlKDH7WtPSS6V1jhOTQ==
+"@polkadot/ui-keyring@^0.45.0-beta.12":
+  version "0.45.0-beta.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/ui-keyring/-/ui-keyring-0.45.0-beta.12.tgz#1624e8ab032a8ba0df36277da283645bab7f39fd"
+  integrity sha512-IxAR4TD+Umm2UCQsadV1EXHvksgMWg2vgdEwA2tFIPBE5c5GClreOsvgvRt+5WjHZ4cmaHMv+93C1U5p3/lqUg==
   dependencies:
     "@babel/runtime" "^7.6.0"
+    "@ledgerhq/hw-transport-node-hid" "^4.70.0"
+    "@ledgerhq/hw-transport-u2f" "^4.70.0"
+    "@ledgerhq/hw-transport-webusb" "^4.70.0"
+    "@types/ledgerhq__hw-transport-node-hid" "^4.21.1"
+    "@types/ledgerhq__hw-transport-u2f" "^4.21.1"
     "@types/mkdirp" "^0.5.2"
     "@types/store" "^2.0.2"
     extensionizer "^1.0.1"
+    ledger-polkadot "^0.0.4"
     mkdirp "^0.5.1"
     store "^2.0.12"
     styled-components "^4.3.1"
 
-"@polkadot/ui-settings@^0.45.0-beta.8":
-  version "0.45.0-beta.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/ui-settings/-/ui-settings-0.45.0-beta.8.tgz#2323e417e8b2fcf0579a223f77ff31fded412551"
-  integrity sha512-QTlWJCzDo1sLi7QMmH/bBn3UDEhLSo5vJsF0Vi3dmiQyZLscHpzANRmtgW5oqIsO0FoEh3QvwHlhN6UjlmfNPg==
+"@polkadot/ui-settings@^0.45.0-beta.12":
+  version "0.45.0-beta.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/ui-settings/-/ui-settings-0.45.0-beta.12.tgz#cbd647df564533cd599f259a3b96a6d63cc75c6e"
+  integrity sha512-UBsv1i5/KEPvCotL4PBdiSx2YJDxlVN4jtwLTOA5AcOJcITubY/caV/07TJMFQ+80t8dJAxB5J7vdQF+WI4/ZA==
   dependencies:
     "@babel/runtime" "^7.6.0"
     "@types/store" "^2.0.2"
     store "^2.0.12"
 
-"@polkadot/ui-shared@^0.45.0-beta.8":
-  version "0.45.0-beta.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/ui-shared/-/ui-shared-0.45.0-beta.8.tgz#9ee93536d3f455f2a40d385d234e4f6e82222029"
-  integrity sha512-6sPYuMV6pGG8aEE7pWf2M/HpcUzrN2QJ9AQlEirQvWdsY1hiutlEe9uq+Cq4lcFmKy0/nabhBdimxpv5yntmKQ==
+"@polkadot/ui-shared@^0.45.0-beta.12":
+  version "0.45.0-beta.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/ui-shared/-/ui-shared-0.45.0-beta.12.tgz#f218ba6d7415270fa01c9c016028484646e2e4cc"
+  integrity sha512-9hBE3+/Ez97Dzf4P/NHwdDAVCAzz46Or/L/4rVCTlagH0GQWT8k/J9agbAiTmp6i6SEhqWJBjgc/aYB1NBTgig==
   dependencies:
     "@babel/runtime" "^7.6.0"
     "@types/color" "^3.0.0"
@@ -2433,6 +2520,30 @@
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.3.tgz#bdfd69d61e464dcc81b25159c270d75a73c1a636"
   integrity sha512-Il2DtDVRGDcqjDtE+rF8iqg1CArehSK84HZJCT7AMITlyXRBpuPhqGLDQMowraqqu1coEaimg4ZOqggt6L6L+A==
 
+"@types/ledgerhq__hw-transport-node-hid@^4.21.1":
+  version "4.22.1"
+  resolved "https://registry.yarnpkg.com/@types/ledgerhq__hw-transport-node-hid/-/ledgerhq__hw-transport-node-hid-4.22.1.tgz#0f075f8965c7234126eb19bc8d569b73cc9a6f8e"
+  integrity sha512-EVdR5HWKUsuQOeg8DUqyhAtCooPsYpA3q+xvEdcZsgXxD/R8XNuYxSDCKNVyl0nEfobfJisb7f3Ta+Shf58izw==
+  dependencies:
+    "@types/ledgerhq__hw-transport" "*"
+    "@types/node" "*"
+    "@types/node-hid" "*"
+
+"@types/ledgerhq__hw-transport-u2f@^4.21.1":
+  version "4.21.1"
+  resolved "https://registry.yarnpkg.com/@types/ledgerhq__hw-transport-u2f/-/ledgerhq__hw-transport-u2f-4.21.1.tgz#8193aa3199cc5ba6cf7f9d880a88f2993a6c6c3b"
+  integrity sha512-8mVUb2/Oj3VtP/ERpm//HL/JOLxKFZycMeFjKxkRMp3283Vz0slBkeHxSdjxRQjiZi7zRu9amQ8dPXnr1B5nIg==
+  dependencies:
+    "@types/ledgerhq__hw-transport" "*"
+    "@types/node" "*"
+
+"@types/ledgerhq__hw-transport@*":
+  version "4.21.2"
+  resolved "https://registry.yarnpkg.com/@types/ledgerhq__hw-transport/-/ledgerhq__hw-transport-4.21.2.tgz#92eaea9e4669df2c8ec5292b694097d1629b05c1"
+  integrity sha512-NhJwkdxdsqj/ZTq9KuBYtN+rDYOVYrlR3ByYNfK78iUOIlmXcXFBtfkhBUpX8c7dbE5uJZOjDdM3EC7Kf3Fakg==
+  dependencies:
+    "@types/node" "*"
+
 "@types/memoizee@^0.4.3":
   version "0.4.3"
   resolved "https://registry.yarnpkg.com/@types/memoizee/-/memoizee-0.4.3.tgz#f48270d19327c1709620132cf54d598650f98492"
@@ -2457,6 +2568,13 @@
   dependencies:
     "@types/node" "*"
 
+"@types/node-hid@*":
+  version "0.7.3"
+  resolved "https://registry.yarnpkg.com/@types/node-hid/-/node-hid-0.7.3.tgz#993762b795473dc2ad8ee041f870838735087532"
+  integrity sha512-ip+Un3Ps0Qok3W3fMgYxaYxVYcbjDYM7yXNm8Uf1sggvSeXL/Q+vZG0AdSDWDQO9apQSE7Yieb4SjfymF1OqPA==
+  dependencies:
+    "@types/node" "*"
+
 "@types/node@*", "@types/node@^12.7.5":
   version "12.7.5"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.7.5.tgz#e19436e7f8e9b4601005d73673b6dc4784ffcc2f"
@@ -3807,7 +3925,7 @@ binary-extensions@^1.0.0:
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-1.13.1.tgz#598afe54755b2868a5330d2aff9d4ebb53209b65"
   integrity sha512-Un7MIEDdUC5gNpcGDV97op1Ywk748MpHcFTHoYs6qnj1Z3j7I53VG3nwZhKzoBZmbdRNnb6WRdFlwl7tSDuZGw==
 
-bindings@^1.5.0:
+bindings@^1.4.0, bindings@^1.5.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.5.0.tgz#10353c9e945334bc0511a6d90b38fbc7c9c504df"
   integrity sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==
@@ -3832,6 +3950,13 @@ bip66@^1.1.5:
   dependencies:
     safe-buffer "^5.0.1"
 
+bl@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/bl/-/bl-3.0.0.tgz#3611ec00579fd18561754360b21e9f784500ff88"
+  integrity sha512-EUAyP5UHU5hxF8BPT0LKW8gjYLhq1DQIcneOX/pL/m2Alo+OYDQAJlHq+yseMP50Os2nHXOSic6Ss3vSQeyf4A==
+  dependencies:
+    readable-stream "^3.0.1"
+
 blakejs@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/blakejs/-/blakejs-1.1.0.tgz#69df92ef953aa88ca51a32df6ab1c54a155fc7a5"
@@ -5438,6 +5563,13 @@ decode-uri-component@^0.2.0:
   resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
   integrity sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=
 
+decompress-response@^3.3.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/decompress-response/-/decompress-response-3.3.0.tgz#80a4dd323748384bfa248083622aedec982adff3"
+  integrity sha1-gKTdMjdIOEv6JICDYirt7Jgq3/M=
+  dependencies:
+    mimic-response "^1.0.0"
+
 dedent@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/dedent/-/dedent-0.7.0.tgz#2495ddbaf6eb874abb0e1be9df22d2e5a544326c"
@@ -5602,7 +5734,7 @@ detect-indent@^5.0.0:
   resolved "https://registry.yarnpkg.com/detect-indent/-/detect-indent-5.0.0.tgz#3871cc0a6a002e8c3e5b3cf7f336264675f06b9d"
   integrity sha1-OHHMCmoALow+Wzz38zYmRnXwa50=
 
-detect-libc@^1.0.2:
+detect-libc@^1.0.2, detect-libc@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
   integrity sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=
@@ -5936,7 +6068,7 @@ encoding@^0.1.11:
   dependencies:
     iconv-lite "~0.4.13"
 
-end-of-stream@^1.0.0, end-of-stream@^1.1.0:
+end-of-stream@^1.0.0, end-of-stream@^1.1.0, end-of-stream@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/end-of-stream/-/end-of-stream-1.4.1.tgz#ed29634d19baba463b6ce6b80a37213eab71ec43"
   integrity sha512-1MkrZNvWTKCaigbn+W15elq2BB/L22nqrSY5DKlo3X6+vclJm8Bb5djXJBmEX6fS3+zCh/F4VBK5Z2KxJt4s2Q==
@@ -6498,6 +6630,11 @@ expand-range@^1.8.1:
   dependencies:
     fill-range "^2.1.0"
 
+expand-template@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/expand-template/-/expand-template-2.0.3.tgz#6e14b3fcee0f3a6340ecb57d2e8918692052a47c"
+  integrity sha512-XYfuKMvj4O35f/pOXLObndIRvyQ+/+6AhODh+OKWj9S9498pHHn/IMszH+gt0fBCRWMNfk1ZSp5x3AifmnI2vg==
+
 expand-tilde@^2.0.0, expand-tilde@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/expand-tilde/-/expand-tilde-2.0.2.tgz#97e801aa052df02454de46b02bf621642cdc8502"
@@ -7005,6 +7142,11 @@ from2@^2.1.0:
     inherits "^2.0.1"
     readable-stream "^2.0.0"
 
+fs-constants@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs-constants/-/fs-constants-1.0.0.tgz#6be0de9be998ce16af8afc24497b9ee9b7ccd9ad"
+  integrity sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow==
+
 fs-extra@^7.0.0, fs-extra@^7.0.1:
   version "7.0.1"
   resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-7.0.1.tgz#4f189c44aa123b895f722804f55ea23eadc348e9"
@@ -7230,6 +7372,11 @@ gitconfiglocal@^1.0.0:
   dependencies:
     ini "^1.3.2"
 
+github-from-package@0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/github-from-package/-/github-from-package-0.0.0.tgz#97fb5d96bfde8973313f20e8288ef9a167fa64ce"
+  integrity sha1-l/tdlr/eiXMxPyDoKI75oWf6ZM4=
+
 glob-base@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/glob-base/-/glob-base-0.3.0.tgz#dbb164f6221b1c0b1ccf82aea328b497df0ea3c4"
@@ -9468,6 +9615,14 @@ lead@^1.0.0:
   dependencies:
     flush-write-stream "^1.0.2"
 
+ledger-polkadot@^0.0.4:
+  version "0.0.4"
+  resolved "https://registry.yarnpkg.com/ledger-polkadot/-/ledger-polkadot-0.0.4.tgz#3f9b56287fe25e51314df7c573a5b4dc8e620c7f"
+  integrity sha512-krXq/BC3K6VHKS4U1Ou+7HUEWCP4OkinK7z8NW5T2/NjQ62u1m9SeyHCXT03ycpU/WqhQWO7tuhvX3zhNH5eqA==
+  dependencies:
+    "@babel/runtime" "^7.4.4"
+    "@ledgerhq/hw-transport" "^4.35.0"
+
 left-pad@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/left-pad/-/left-pad-1.3.0.tgz#5b8a3a7765dfe001261dde915589e782f8c94d1e"
@@ -10170,6 +10325,11 @@ mimic-fn@^2.0.0, mimic-fn@^2.1.0:
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
   integrity sha512-OqbOk5oEQeAZ8WXWydlu9HJjz9WVdEIvamMCcXmuqUYjTknH/sqsWvhQ3vgwKFRR1HpjvNBKQ37nbJgYzGqGcg==
 
+mimic-response@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-1.0.1.tgz#4923538878eef42063cb8a3e3b0798781487ab1b"
+  integrity sha512-j5EctnkH7amfV/q5Hgmoal1g2QHFJRraOtmx0JpIqkxhBhI/lJSl1nMpQ45hVarwNETOoWEimndZ4QK0RHxuxQ==
+
 min-document@^2.19.0:
   version "2.19.0"
   resolved "https://registry.yarnpkg.com/min-document/-/min-document-2.19.0.tgz#7bd282e3f5842ed295bb748cdd9f1ffa2c824685"
@@ -10398,7 +10558,12 @@ mz@^2.5.0, mz@^2.7.0:
     object-assign "^4.0.1"
     thenify-all "^1.0.0"
 
-nan@^2.11.0, nan@^2.12.1, nan@^2.14.0:
+nan@2.13.2:
+  version "2.13.2"
+  resolved "https://registry.yarnpkg.com/nan/-/nan-2.13.2.tgz#f51dc7ae66ba7d5d55e1e6d4d8092e802c9aefe7"
+  integrity sha512-TghvYc72wlMGMVMluVo9WRJc0mB8KxxF/gZ4YYFy7V2ZQX9l7rgbPg7vjS9mt6U5HXODVFVI2bOduCzwOMv/lw==
+
+nan@^2.11.0, nan@^2.12.1, nan@^2.13.2, nan@^2.14.0:
   version "2.14.0"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.14.0.tgz#7818f722027b2459a86f0295d434d1fc2336c52c"
   integrity sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg==
@@ -10425,6 +10590,11 @@ nanomatch@^1.2.9:
     snapdragon "^0.8.1"
     to-regex "^3.0.1"
 
+napi-build-utils@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/napi-build-utils/-/napi-build-utils-1.0.1.tgz#1381a0f92c39d66bf19852e7873432fc2123e508"
+  integrity sha512-boQj1WFgQH3v4clhu3mTNfP+vOBxorDlE8EKiMjUlLG3C4qAESnn9AxIOkFgTR2c9LtzNjPrjS60cT27ZKBhaA==
+
 natural-compare@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
@@ -10477,6 +10647,13 @@ no-case@^2.2.0:
   dependencies:
     lower-case "^1.1.1"
 
+node-abi@^2.7.0:
+  version "2.11.0"
+  resolved "https://registry.yarnpkg.com/node-abi/-/node-abi-2.11.0.tgz#b7dce18815057544a049be5ae75cd1fdc2e9ea59"
+  integrity sha512-kuy/aEg75u40v378WRllQ4ZexaXJiCvB68D2scDXclp/I4cRq6togpbOoKhmN07tns9Zldu51NNERo0wehfX9g==
+  dependencies:
+    semver "^5.4.1"
+
 node-fetch-npm@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/node-fetch-npm/-/node-fetch-npm-2.0.2.tgz#7258c9046182dca345b4208eda918daf33697ff7"
@@ -10521,6 +10698,15 @@ node-gyp@^5.0.2:
     tar "^4.4.8"
     which "1"
 
+node-hid@^0.7.9:
+  version "0.7.9"
+  resolved "https://registry.yarnpkg.com/node-hid/-/node-hid-0.7.9.tgz#cc0cdf1418a286a7667f0b63642b5eeb544ccd05"
+  integrity sha512-vJnonTqmq3frCyTumJqG4g2IZcny3ynkfmbfDfQ90P3ZhRzcWYS/Um1ux6HFmAxmkaQnrZqIYHcGpL7kdqY8jA==
+  dependencies:
+    bindings "^1.5.0"
+    nan "^2.13.2"
+    prebuild-install "^5.3.0"
+
 node-int64@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/node-int64/-/node-int64-0.4.0.tgz#87a9065cdb355d3182d8f94ce11188b825c68a3b"
@@ -10594,6 +10780,11 @@ node-releases@^1.1.29:
   dependencies:
     semver "^5.3.0"
 
+noop-logger@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/noop-logger/-/noop-logger-0.1.1.tgz#94a2b1633c4f1317553007d8966fd0e841b6a4c2"
+  integrity sha1-lKKxYzxPExdVMAfYlm/Q6EG2pMI=
+
 nopt@1.0.10:
   version "1.0.10"
   resolved "https://registry.yarnpkg.com/nopt/-/nopt-1.0.10.tgz#6ddd21bd2a31417b92727dd585f8a6f37608ebee"
@@ -10734,7 +10925,7 @@ npm-run-path@^3.0.0:
   dependencies:
     path-key "^3.0.0"
 
-"npmlog@0 || 1 || 2 || 3 || 4", npmlog@^4.0.2, npmlog@^4.1.2:
+"npmlog@0 || 1 || 2 || 3 || 4", npmlog@^4.0.1, npmlog@^4.0.2, npmlog@^4.1.2:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/npmlog/-/npmlog-4.1.2.tgz#08a7f2a8bf734604779a9efa4ad5cc717abb954b"
   integrity sha512-2uUqazuKlTaSI/dC8AzicUck7+IrEaOnN/e0jd3Xtt1KcGpwx30v50mL7oPyr/h9bL3E4aZccVwpwP+5W9Vjkg==
@@ -12304,6 +12495,27 @@ postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.14, postcss@^7.0.16, postcss@^7.0.1
     source-map "^0.6.1"
     supports-color "^6.1.0"
 
+prebuild-install@^5.2.4, prebuild-install@^5.3.0:
+  version "5.3.2"
+  resolved "https://registry.yarnpkg.com/prebuild-install/-/prebuild-install-5.3.2.tgz#6392e9541ac0b879ef0f22b3d65037417eb2035e"
+  integrity sha512-INDfXzTPnhT+WYQemqnAXlP7SvfiFMopMozSgXCZ+RDLb279gKfIuLk4o7PgEawLp3WrMgIYGBpkxpraROHsSA==
+  dependencies:
+    detect-libc "^1.0.3"
+    expand-template "^2.0.3"
+    github-from-package "0.0.0"
+    minimist "^1.2.0"
+    mkdirp "^0.5.1"
+    napi-build-utils "^1.0.1"
+    node-abi "^2.7.0"
+    noop-logger "^0.1.1"
+    npmlog "^4.0.1"
+    pump "^3.0.0"
+    rc "^1.2.7"
+    simple-get "^3.0.3"
+    tar-fs "^2.0.0"
+    tunnel-agent "^0.6.0"
+    which-pm-runs "^1.0.0"
+
 precss@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/precss/-/precss-4.0.0.tgz#518ce5c4d31eac9bd268c538ae6fb462f3bf57b3"
@@ -12572,7 +12784,7 @@ query-string@^5.0.1:
     object-assign "^4.1.0"
     strict-uri-encode "^1.0.0"
 
-query-string@^6.8.2:
+query-string@^6.8.3:
   version "6.8.3"
   resolved "https://registry.yarnpkg.com/query-string/-/query-string-6.8.3.tgz#fd9fb7ffb068b79062b43383685611ee47777d4b"
   integrity sha512-llcxWccnyaWlODe7A9hRjkvdCKamEKTh+wH8ITdTc3OhchaqUZteiSCX/2ablWHVrkVIe04dntnaZJ7BdyW0lQ==
@@ -12965,7 +13177,7 @@ read@1, read@~1.0.1:
     string_decoder "~1.1.1"
     util-deprecate "~1.0.1"
 
-"readable-stream@2 || 3", readable-stream@^3.0.2, readable-stream@^3.0.6, readable-stream@^3.1.1:
+"readable-stream@2 || 3", readable-stream@^3.0.1, readable-stream@^3.0.2, readable-stream@^3.0.6, readable-stream@^3.1.1:
   version "3.4.0"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-3.4.0.tgz#a51c26754658e0a3c21dbf59163bd45ba6f447fc"
   integrity sha512-jItXPLmrSR8jmTRmRWJXCnGJsfy85mB3Wd/uINMXA65yrnFo0cPClFIUWzo2najVNSl+mx7/4W8ttlLWJe99pQ==
@@ -13763,6 +13975,20 @@ signal-exit@^3.0.0, signal-exit@^3.0.2:
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
   integrity sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=
 
+simple-concat@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/simple-concat/-/simple-concat-1.0.0.tgz#7344cbb8b6e26fb27d66b2fc86f9f6d5997521c6"
+  integrity sha1-c0TLuLbib7J9ZrL8hvn21Zl1IcY=
+
+simple-get@^3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/simple-get/-/simple-get-3.0.3.tgz#924528ac3f9d7718ce5e9ec1b1a69c0be4d62efa"
+  integrity sha512-Wvre/Jq5vgoz31Z9stYWPLn0PqRqmBDpFSdypAnHu5AvRVCYPRYGnvryNLiXu8GOBNDH82J2FRHUGMjjHUpXFw==
+  dependencies:
+    decompress-response "^3.3.0"
+    once "^1.3.1"
+    simple-concat "^1.0.0"
+
 simple-swizzle@^0.2.2:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/simple-swizzle/-/simple-swizzle-0.2.2.tgz#a4da6b635ffcccca33f70d17cb92592de95e557a"
@@ -14494,6 +14720,27 @@ tapable@^1.0.0, tapable@^1.1.3:
   resolved "https://registry.yarnpkg.com/tapable/-/tapable-1.1.3.tgz#a1fccc06b58db61fd7a45da2da44f5f3a3e67ba2"
   integrity sha512-4WK/bYZmj8xLr+HUCODHGF1ZFzsYffasLUgEiMBY4fgtltdO6B4WJtlSbPaDTLpYTcGVwM2qLnFTICEcNxs3kA==
 
+tar-fs@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/tar-fs/-/tar-fs-2.0.0.tgz#677700fc0c8b337a78bee3623fdc235f21d7afad"
+  integrity sha512-vaY0obB6Om/fso8a8vakQBzwholQ7v5+uy+tF3Ozvxv1KNezmVQAiWtcNmMHFSFPqL3dJA8ha6gdtFbfX9mcxA==
+  dependencies:
+    chownr "^1.1.1"
+    mkdirp "^0.5.1"
+    pump "^3.0.0"
+    tar-stream "^2.0.0"
+
+tar-stream@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/tar-stream/-/tar-stream-2.1.0.tgz#d1aaa3661f05b38b5acc9b7020efdca5179a2cc3"
+  integrity sha512-+DAn4Nb4+gz6WZigRzKEZl1QuJVOLtAwwF+WUxy1fJ6X63CaGaUAxJRD2KEn1OMfcbCjySTYpNC6WmfQoIEOdw==
+  dependencies:
+    bl "^3.0.0"
+    end-of-stream "^1.4.1"
+    fs-constants "^1.0.0"
+    inherits "^2.0.3"
+    readable-stream "^3.1.1"
+
 tar@^4, tar@^4.4.10, tar@^4.4.8:
   version "4.4.10"
   resolved "https://registry.yarnpkg.com/tar/-/tar-4.4.10.tgz#946b2810b9a5e0b26140cf78bea6b0b0d689eba1"
@@ -14970,6 +15217,11 @@ typescript@3.5.x, typescript@^3.6.3:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.6.3.tgz#fea942fabb20f7e1ca7164ff626f1a9f3f70b4da"
   integrity sha512-N7bceJL1CtRQ2RiG0AQME13ksR7DiuQh/QehubYcghzv20tnh+MQnQIuJddTmsbqYj+dztchykemz0zFzlvdQw==
 
+u2f-api@0.2.7:
+  version "0.2.7"
+  resolved "https://registry.yarnpkg.com/u2f-api/-/u2f-api-0.2.7.tgz#17bf196b242f6bf72353d9858e6a7566cc192720"
+  integrity sha512-fqLNg8vpvLOD5J/z4B6wpPg4Lvowz1nJ9xdHcCzdUPKcFE/qNCceV2gNZxSJd5vhAZemHr/K/hbzVA0zxB5mkg==
+
 uc.micro@^1.0.1, uc.micro@^1.0.5:
   version "1.0.6"
   resolved "https://registry.yarnpkg.com/uc.micro/-/uc.micro-1.0.6.tgz#9c411a802a409a91fc6cf74081baba34b24499ac"
@@ -15243,6 +15495,15 @@ url@^0.11.0:
     punycode "1.3.2"
     querystring "0.2.0"
 
+usb@^1.6.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/usb/-/usb-1.6.0.tgz#bc5d4decf4ffca32d1136717edcf73366137a789"
+  integrity sha512-52DyWlCk9K+iw3LnvY95WXSnpHjxJoI++aGkV8HiMNPc4zmvDQlYvWAzrkbJ2JH3oUcx26XfU5sZcG4RAcVkMg==
+  dependencies:
+    bindings "^1.4.0"
+    nan "2.13.2"
+    prebuild-install "^5.2.4"
+
 use@^3.1.0:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/use/-/use-3.1.1.tgz#d50c8cac79a19fbc20f2911f56eb973f4e10070f"
@@ -15840,6 +16101,11 @@ which-module@^2.0.0:
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
   integrity sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=
 
+which-pm-runs@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/which-pm-runs/-/which-pm-runs-1.0.0.tgz#670b3afbc552e0b55df6b7780ca74615f23ad1cb"
+  integrity sha1-Zws6+8VS4LVd9rd4DKdGFfI60cs=
+
 which@1, which@^1.2.14, which@^1.2.9, which@^1.3.0, which@^1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/which/-/which-1.3.1.tgz#a45043d54f5805316da8d62f9f50918d3da70b0a"