Biometric data authentication using remote database

A range of issues arises in biometric authentication primarily concerning protection of biometric data against security leaks and potential abuse. Biometric data is inherently irreplaceable and its protection must be a key part of an authentication system. This thesis proposes a solution, in which a remote server authenticates users without transferring their biometric data across network. The key is the introduction of representative sets of biometric samples. User's sample is matched with elements of representative set by a score function. Resulting score vector is stored in a database. Users are authenticated by scoring their biometric sample against the representative set and the resulting vector is matched with the enrolled score vector