Lithium Cell Battery CR3032 cells are commonly used in car security (car alarm/keyfob batteries), organizer (backup battery for PDA such as Psion etc), glucometer, camera, electric thermometer, calculator, computer equipment (memory backup battery), toys, communication equipment, electronic watches/clocks, card radios, data pack for video camera. The Lithium Cell Battery CR3032 power dives computers such as the older Sherwood diving computers and the Rite B'Air dive computer. Another is the Ensure Technology's ZyLoc proximity authentication system.