A method and apparatus for providing universal key security in a mechanical key access environment is disclosed. An electromechanical lock is provided for securing an environment, whereby access is permitted through the steps of receiving a key in the lock, reading a first source of indicia from the...http://www.google.fr/patents/US20050077995?utm_source=gb-gplus-shareBrevet US20050077995 - UNIVERSAL KEY SECURITY METHOD AND SYSTEM
