Miracle electronics that use some form of biometrics to keep unauthorized people from firing the gun. Sound complicated? Want to rely on that gun? When the cops are forced to rely on this, then I will entertain the thought of maybe buying this type of gun for a curiosity.
PS: Good meeting you at the game tonight. Next time hopefully I won't lose as much money to you...
Maybe it will work as well as the biometric readers at gun shops that take about 10 minutes to train as you move your finger all over the pad.
Wait I can see it now, wait till I hear the beep, one more minute, up a little, to the right