snag_machine
A device from the games Pokémon_Colosseum and Pokémon_XD:_Gale_of_Darkness that modifies normal Pokéballs to be capable of stealing Pokémon from other trainers. The protagonist of each game wears a portable version on their left arm and uses it to steal Shadow Pokémon in order to purify them.
See also
* Pokémon_Colosseum
* Pokémon_XD