Computer hardware; computer-aided point-of-service systems comprised of computer hardware and operating systems for access control, for the providing of food and drink and temporary accommodation, for the sale of goods and services, for displaying information, in particular for catering, for sports events, trade fairs, amusement parks, event halls, festivals, theatres, cultural sites, cinemas, hotels, and components for the aforesaid point-of-service systems; programs; software for operating ...