To reduce accidental deaths during civil disturbances, firearms manufacturer FN Herstal has developed a gun that not only fires less-than-lethal elastomer projectiles, it has a digital smart sight that can recognize human heads and refuse to fire at them.
Whenever there’s these electronic restrictions in place for weaponry I always think that it’s probably fairly easy to circumvent. You could probably find the traces and or wires that go to the trigger and firing pin solenoid and bridge them and circumvent whatever the head recognition system is.