The operating software is outsourced to a cloud system. The operator logs on with account, client, user and thus has the advantages of a cloud application in the front-end. Data is encrypted with an object-specific key. The data of the account is optionally available in the cloud, an external server space or a separate database server. Multilingual user interface/API.
Microservices ensure encrypted communication between user input, database and terminals. Decisions (access permitted, access denied, people counting, time monitoring, alarms, etc.) are taken directly on site.