Kartnbastler-Scanner

Scan and save contact information.

Guest does not need an app.
Simply create a guest card ("Wirtshaus-Kartn") at kartnbastler.de.
Guest card ("Wirtshaus-Kartn") works on paper as well as a photo on the mobile phone.
Local data storage - no cloud, no external server, no transfer of contact information to the internet.
Contact information is stored in encrypted form.
Backup: Contact information (encrypted) can be exported and saved as a text file.
Authority can export contact information unencrypted as a text file.
Text files structured in a database readable manner (CSV).
Two operating modes: restaurateur scans the guest's guest card (standard) - guest scans the card himself when entering and leaving the restaurant.