The night-sight is a small electronic targeting feature for firearms.
The device allows the user to see clearly in extreme low-light conditions to allow for accurate aiming. Furthermore, it is small enough that it can be easily mounted on personal weapons, including pistols.
The device was first used in 1980 when Dick Tracy faced off against Art Dekko in a darkened art gallery after the criminal shut off the power. With a night-sight equipped pistol, Tracy was able to incapacitate Dekko with a single shot as Dekko tried to escape.