As a youngster, I frequented a laser tag place that issued you an iButton when you registered for a game, containing your player name. When you got into the arena, you would tap the iButton to the laser gun to sign in, so the system knew which gun was in use by which player.
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As a youngster, I frequented a laser tag place that issued you an iButton when you registered for a game, containing your player name. When you got into the arena, you would tap the iButton to the laser gun to sign in, so the system knew which gun was in use by which player.