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Abstract

The basic idea of the task is to revolutionize the customer management solutions that are still in use, to create a data exchange application. The application is able to store data securely using unique identifiers. The identifiers are standard, so they are also suitable for data exchange. The security level of the data can be regulated, so that only the appropriate level of data is transferred in the event of a data exchange. The requested data is identified by scanning a QR code. After reading, the data can be checked and edited on an interface. Mandatory data is always transmitted, optional data only if set correctly. Data is also returned using a QR code. The code can be stored so that the sent data can be checked afterwards.