[Home](./index.md) > [@digitalpersona/core](./core.md) > [BioFactor](./core.biofactor.md) ## BioFactor enum Biometric factors. Signature: ```typescript export declare enum BioFactor ``` ## Enumeration Members | Member | Value | Description | | --- | --- | --- | | FacialFeatures | 2 | | | Fingerprint | 8 | | | Gait | 4096 | | | HandGeometry | 64 | | | Iris | 16 | | | KeystrokeDynamics | 256 | | | LipMovement | 512 | | | Multiple | 1 | | | Retina | 32 | | | SignatureDynamics | 128 | | | ThermalFaceImage | 1024 | | | ThermalHandImage | 2048 | | | Voice | 4 | |