To increase security and accountability, a magnetic dallas key can be assigned to each operator of the cash register / touch screen system.  They would then be required to place their key on the dallas lock in order to sign on and be allowed to use the system.

Compatibility: 

Casio TE-4000, Casio TE-4500, Casio TE-8000, Casio TE-8500, Casio QT-2100,  Casio QT-6000, Casio QT-6100, Casio QT-6600, Casio V-R100, Casio V-R200,  Casio V-R7000, Casio V-R7100, Sam4s Titan S360, Sam4s Titan S560, Sam4s Forza 110, Sam4s Forza 115, Sam4s Forza 116, Sam4s Sapphire