MechKey
"If you're gonna have guns you have to take the proper precautions."*
MechKey allows you to be a responsible gun owner. It prevents children, thieves, and any unauthorized people from firing your gun while being ready to allow you to defend yourself in an emergency.
You don't need to memorize a passcode or fumble around with a key, and you don't have to modify your gun or go out and purchase a "smart gun" for hundreds or thousands of dollars. Your unique fingerprint is the key, and MechKey simply and securely attaches to your gun with its existing hardware in a minutes.
*quote from a gun owner