[Home](./index.md) > [@digitalpersona/authentication](./authentication.md) > [FingerprintsAuth](./authentication.fingerprintsauth.md) > [identify](./authentication.fingerprintsauth.identify.md) ## FingerprintsAuth.identify() method Identifies the user with their fingerprints. Signature: ```typescript identify(samples: BioSample[]): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | samples | BioSample[] | a collection of biometric samples with fingerprint scans. | Returns: `Promise` a promise to return a JSON Web Token containing a claim (`crd`) showing the fact a fingerprint was used. Will reject if identification fails. ## Remarks If the `identity` parameter is a user name, a new token will be created. If the `identity` parameter is a JSON Web Token, an updated token will be returned.