Health authorities all around the world are working on social distancing apps as a way of digital contact tracing since early 2020. The aim is to provide an instrument, which allows automatic registering of encounters and following that, informs everyone that has been in contact with an infected person. Due to an incompatible BLE-Solution for both Android and iOS a mutual recognition of the particular end device was not possible. Therefor the development of a reliable instrument for relieving health offices by making the manual contact tracing digital, was distant.