The invention discloses a tokenless biometric identification computer system, comprising at least a database containing registered biometric samples of users. A comparator compares a bid biometric sample of a user to at least one registered biometric sample, the bid biometric sample obtained directly...http://www.google.co.uk/patents/US20020111917?utm_source=gb-gplus-sharePatent US20020111917 - Tokenless biometric electronic transactions using an audio signature to identify the transaction processor
