Biometric access authentication method wherein each time access is required a fingerprint sample is compared with a stored encrypted reference with the new fingerprint sample forming a new reference after a positive comparison

摘要

Method for checking an electronic signature in the form of a biometric fingerprint, whereby a fingerprint (EB) is recorded and analyzed to form a sample (ECH). The sample is compared (204) with a reference value the has been decrypted using a key requested from a server. If the comparison is positive access is grated. The sample is then used to form a new encryption key, which is stored in the server together with the new encrypted reference value. The new encrypted reference is also stored locally.