Ausweis is a service providing smart mobile access to facilities: universal, comfortable, secure. Ausweis service consists of Ausweis Device, Ausweis App, and IoT Cloud Platform. It enables easy access to various entrances with your smartphone/via the web cabinet, creation and sending of any number of keys online, setting of individual access schedules, 24/7 online access monitoring, personal access authentication, instant notifications in case of unauthorized access attempts. The system can be implemented in any apartments, houses, residential complexes, hotels, public places (entrances, turnstiles, gates), industrial facilities, offices and business centers, financial premises, parking places.