Abstract: In one embodiment, a method includes accessing query biometric data associated with a verification request for a user. The method further includes applying a transformation to the query biometric data to generate a transformed query template representing the query biometric data and accessing a transformed enrollment template comprising transformed enrollment biometric data of the user. The method further includes determining, based on a scoring function comparing the transformed query template and the transformed enrollment template, a plurality of similarity scores, each similarity score associated with a different value of a scoring parameter; and determining, based on the plurality of determined similarity scores, whether to grant or deny the verification request.

Abstract: In one embodiment, a method includes accessing query biometric data associated with a verification request for a user. The method further includes applying a transformation to the query biometric data to generate a transformed query template representing the query biometric data and accessing a transformed enrollment template comprising transformed enrollment biometric data of the user. The method further includes determining, based on a scoring function comparing the transformed query template and the transformed enrollment template, a plurality of similarity scores, each similarity score associated with a different value of a scoring parameter; and determining, based on the plurality of determined similarity scores, whether to grant or deny the verification request.