smart guns

A smart gun, also called a smart-gun, or smartgun, is a firearm that can detect its authorized user(s) or something that is normally only possessed by its authorized user(s). The term is also used in science fiction to refer to various types of semi-automatic firearms.
Smart guns have one or more systems that allow them to fire only when activated by an authorized user. Those systems typically employ RFID chips or other proximity tokens, fingerprint recognition, magnetic rings, or mechanical locks. They can thereby prevent accidental shootings, gun thefts, and criminal usage by persons not authorized to use the guns.
Related to smart guns are other smart firearms safety devices such as biometric or RFID activated accessories and safes.

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