Recognizer

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These floating vehicles, colloquially referred to by the public as "stompers" for quite some time, take the place of the tanks at higher levels in the tanks game. The designation "recognizers" was used very sparingly in the film and many viewers might have therefore been unaware of the proper name. In the film, the Recognizers were the vehicles that attempted to stop the light cycles from escaping the game grid by "stomping" on them, and one of these vehicles was also the type of machine that Flynn "resurrected" with his user powers.

Recognizers do not fire at the player's tank at all but move at high speed, relentlessly converging on the player's location, and each still requires three shots to be destroyed

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In Tron: Legacy Recognizers are used to locate and transport rogue programs. They are either taken to the games or to be derezzed,