@digitalpersona/core
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DigitalPersona Web Access Core library
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[Home](./index.md) > [@digitalpersona/core](./core.md) > [BioSampleHeader](./core.biosampleheader.md)
## BioSampleHeader class
Contains meta-information about biometric sample data.
<b>Signature:</b>
```typescript
export declare class BioSampleHeader
```
## Constructors
| Constructor | Modifiers | Description |
| --- | --- | --- |
| [(constructor)(Factor, Format, Type, Purpose, Quality, Encryption)](./core.biosampleheader.(constructor).md) | | Constructs a new instance of the <code>BioSampleHeader</code> class |
## Properties
| Property | Modifiers | Type | Description |
| --- | --- | --- | --- |
| [Encryption](./core.biosampleheader.encryption.md) | | <code>BioSampleEncryption</code> | Encryption of biometric sample. |
| [Factor](./core.biosampleheader.factor.md) | | <code>BioFactor</code> | Biometric factor. Must be set to 8 for fingerprint. |
| [Format](./core.biosampleheader.format.md) | | <code>BioSampleFormat</code> | Format owner (vendor) information. |
| [Purpose](./core.biosampleheader.purpose.md) | | <code>BioSamplePurpose</code> | Purpose of the biometric sample. |
| [Quality](./core.biosampleheader.quality.md) | | <code>number</code> | Quality of biometric sample. If we don't support quality it should be set to -1. |
| [Type](./core.biosampleheader.type.md) | | <code>BioSampleType</code> | Biometric sample representation type. |