Patent attributes
Techniques and apparatuses are described that enable a device to be unlocked and continuous user authentication without a touch input dedicated to fingerprint requisition. A touch input is received that comprises one or more touches to a touchscreen, and raw image data corresponding to the touches is retrieved from a fingerprint imaging sensor. A pixel-clustering technique is performed on the raw image data to determine a portion of the raw image data that corresponds to each of the touches. Touch embeddings are formed for each of the portions of the raw image data and compared to one or more stored fingerprint embeddings that correspond to respective fingerprints of one or more authorized users. An authentication result is then determined for the touch input based on the comparison results.
