@digitalpersona/devices/dist/api/docs/devices.fingerprintreader.startacquisition.md

DigitalPersona Security Devices support library

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[Home](./index.md) &gt; [@digitalpersona/devices](./devices.md) &gt; [FingerprintReader](./devices.fingerprintreader.md) &gt; [startAcquisition](./devices.fingerprintreader.startacquisition.md)

## FingerprintReader.startAcquisition() method

Activate a fingerprint acquisition mode. This call will produce a [AcquisitionStarted](./devices.acquisitionstarted.md) event if activation was successful. After that the reader will wait for a finger placed on the reader. When a finger is placed, a [QualityReported](./devices.qualityreported.md) event will report a scan quality, and a [SamplesAcquired](./devices.samplesacquired.md) event will return a scanned sample in case of a successful scan.

<b>Signature:</b>

```typescript
startAcquisition(sampleFormat: SampleFormat, deviceUid?: string): Promise<void>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  sampleFormat | <code>SampleFormat</code> |  |
|  deviceUid | <code>string</code> |  |

<b>Returns:</b>

`Promise<void>`