The main reason, IMO, is because "smart guns" are actually very stupid. Unlocked by owner's thumbprint? Tough luck, police officer wearing gloves. Unlucky, dea

The main reason, IMO, is because "smart guns" are actually very stupid. Unlocked by owner's thumbprint? Tough luck, police officer wearing gloves. Unlucky, dear soldier with muddy hands. Unlocked by radio-frequency? Rob a bank after installing a radio-frequency jammer.