[Home](./index.md) > [@digitalpersona/core](./core.md) > [FaceImage](./core.faceimage.md) > [toBioSample](./core.faceimage.tobiosample.md) ## FaceImage.toBioSample() method Exports the face image data to a [BioSample](./core.biosample.md) object. Signature: ```typescript toBioSample(format?: BioSampleFormat, purpose?: BioSamplePurpose, sdkVersion?: number): BioSample; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | format | BioSampleFormat | | | purpose | BioSamplePurpose | | | sdkVersion | number | | Returns: `BioSample`