diff --git a/packages/react-qr/src/ScanAddress.tsx b/packages/react-qr/src/ScanAddress.tsx
index 9d70cbb9..5bd0b5b2 100644
--- a/packages/react-qr/src/ScanAddress.tsx
+++ b/packages/react-qr/src/ScanAddress.tsx
@@ -11,9 +11,14 @@ import { ADDRESS_PREFIX } from './constants';
 import QrScan from './Scan';
 import { decodeAddress } from '@polkadot/util-crypto';
 
+interface ScanType {
+  address: string;
+  genesisHash: string;
+}
+
 interface Props extends BaseProps {
   onError?: (error: Error) => void;
-  onScan?: (aqddress: string, genesisHash: string) => void;
+  onScan?: (scanned: ScanType) => void;
 }
 
 export default class ScanAddress extends React.PureComponent<Props> {
@@ -44,7 +49,7 @@ export default class ScanAddress extends React.PureComponent<Props> {
       assert(prefix === ADDRESS_PREFIX, `Invalid address received, expected '${ADDRESS_PREFIX}', found '${prefix}'`);
 
       decodeAddress(address);
-      onScan(address, genesisHash);
+      onScan({ address, genesisHash });
     } catch (error) {
       console.error('@polkadot/react-qr:QrScanAddress', error.message, data);
     }
diff --git a/packages/react-qr/src/ScanSignature.tsx b/packages/react-qr/src/ScanSignature.tsx
index aa9db865..543a3e58 100644
--- a/packages/react-qr/src/ScanSignature.tsx
+++ b/packages/react-qr/src/ScanSignature.tsx
@@ -5,13 +5,18 @@
 import { BaseProps } from './types';
 
 import React from 'react';
+import { u8aToHex } from '@polkadot/util';
 
 import QrScan from './Scan';
 import { encodeString } from './util';
 
+interface ScanType {
+  signature: string;
+}
+
 interface Props extends BaseProps {
   onError?: (error: Error) => void;
-  onScan?: (data: Uint8Array) => void;
+  onScan?: (scanned: ScanType) => void;
 }
 
 export default class ScanSignature extends React.PureComponent<Props> {
@@ -36,6 +41,6 @@ export default class ScanSignature extends React.PureComponent<Props> {
       return;
     }
 
-    onScan(encodeString(data));
+    onScan({ signature: u8aToHex(encodeString(data)) });
   }
 }
diff --git a/tsconfig.eslint.json b/tsconfig.eslint.json
index 537a8286..73a45f85 100644
--- a/tsconfig.eslint.json
+++ b/tsconfig.eslint.json
@@ -1,5 +1,9 @@
 {
   "extends": "./tsconfig.json",
+  "exclude": [
+    "build",
+    "packages/*/build"
+  ],
   "include": [
     "packages/**/*.d.ts",
     "packages/**/*.ts",