Dialock from Hafele uk is the world's first contact-free security system. An 80-page technical information catalogue has been produced for the launch. The microcomputer of the lock recognises over 4.3 billion code combinations and releases the lock in milliseconds when a compatible key clip is presented to its light scanner. Because it is touch-free it will not wear out. The lock can be programmed with 150 door-opening functions, and the key clip can be individually programmed with access functions.