Handheld computers for spot billing are sister devices of ticketing machines, but contain different menus that cater to the needs of hotels, restaurants, canteens, shops, supermarkets etc and are used for point of sale (POS) billing. Restaurants and bars can use remote wireless machines that effectively can send orders placed by diners and clients to the kitchen or counter where kitchen order tickets (KOT) or bar order tickets (BOT) are printed and the orders complied with. This saves a lot of time and labor.