A German company developed an access control device for an improved access supervision for office buildings, hotels or factories. The access control identifies the person with a contactless transponder and is able to set off an alarm as soon as any misuse is done. The system can save up to 2.000 places with up to 4.000 bookings battery-backed, even in case of black out. The company is looking for partners with interest in further development or adaptation of this invention to specific needs.