Patent attributes
A liveness detection device comprising a light source unit, image sensor unit, and data processing module and authentication method thereof are provided. The light source unit comprises a substrate having a first inclined surface, whereby emitted light is reflected light from the first inclined surface. An application triggers an authentication process, which is indicated to a user. The light source unit begins illumination having a specific pattern and for a specific period and image signals are generated. Liveness detection signals are generated, via calculation of interference patterns, each, from more than one image signal, in sequence, for determination of liveness. When a liveness threshold is met, feature recognition data is generated, via calculation of interference patterns, each, from more than one image signal, in sequence, for matching. Then, the features are compared with previously enrolled data for locking or unlocking of the liveness detection device and/or system coupled thereto.
