The CyberLock electronic lock system offers a powerful and affordable access control solution. Manufactured by Videx, Inc., of Corvallis, Oregon, the system incorporates the mechanical lock hardware that is already present. Users simply replace existing lock cylinders with electronic cylinders; no hardwiring or structural change is required. The system includes the CyberLock cylinder that cannot be picked and the electronic key that cannot be duplicated. A facility manager can audit access to sensitive areas because both the lock and the key store a record of openings and denied entries. The electronic key can be programmed to open all or selected doors on pre-specified days, and only during certain times on those days. Keys can be set with a date to begin operation and date to expire.