How do enrollment and biometric authentication work?
A prerequisite for authentication is enrollment, in which a biometric feature is saved as a personal reference either decentrally on a chip card or PC, or centrally in a data base. Since the the quality of the enrollment essentially determines the performance of the authentication, it must be implemented carefully. It is obvious that enrollment must take place in a trustworthy environment. During an authentication, a new scanning of the biometric feature is required. This time it is not saved; instead, it is compared to the reference feature. If the comparison is positive, access to the appropriate applications can be granted.
