One example method includes generating a biometric of a user, requesting, and receiving, biometric data from a card, comparing the biometric data with the biometric, and when the biometric data matches data of the biometric, authorizing a transaction requested by a user using the card. The request for biometric data may identify what particular type of biometric data is compatible with the device making the request, and the biometric data may be a subset of the data that makes up the biometric.