Laser tag is a recreational shooting sport where participants use infrared-emitting light guns to tag designated targets. Infrared-sensitive signaling devices are commonly worn by each player to register hits and are sometimes integrated within the arena in which the game is played.

The multiple integrated laser engagement system, or MILES, is used by the U.S. military and other armed forces around the world for training purposes. It uses lasers and blank cartridges to simulate actual battle.