Bar code readers; Optical readers; Radio-frequency identification (RFID) readers; Radio-frequency identification (RFID) tags; Carrying cases for mobile computers; Data processing apparatus; Computer terminals; Computer hardware; Mobile computers; Wireless transmitters and receivers; Electrical cells and batteries; Protective covers and cases for cell phones, laptops and portable media players; Downloadable software development kits (SDK); Carrying cases, holders, protective cases and stands f...