Abstract: A locking system for firearms that utilizes an owner's fingerprint to lock and unlock it is disclosed. Upon initial observation of the invention, it appears like a conventional fire arm lock that goes around the trigger and immobilizes it. Fingerprint sensors are provided that will only acknowledge the fingerprint and thumb print of the gun owner. When the owner touches the sensors once, the present invention will unlock, and when they are touched again, it will lock. A small computerized chip, in conjunction with a lithium battery and an advancement mechanism such as a stepper motor perform the actual locking duties. The housing of the invention is made of titanium to prevent tampering.