@digitalpersona/devices/dist/api/docs/devices.cardsreader.getcardauthdata.md

DigitalPersona Security Devices support library

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[Home](./index.md) &gt; [@digitalpersona/devices](./devices.md) &gt; [CardsReader](./devices.cardsreader.md) &gt; [getCardAuthData](./devices.cardsreader.getcardauthdata.md)

## CardsReader.getCardAuthData() method

Reads card authentication data.

<b>Signature:</b>

```typescript
getCardAuthData(reader: string, pin?: string): Promise<string>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  reader | <code>string</code> | a name of a card reader where the card was presented. |
|  pin | <code>string</code> | an PIN code (for cards requiring a PIN). |

<b>Returns:</b>

`Promise<string>`

a promise to return card authentication data. The card data is an opaque encoded string which should be sent to the server as is.