After the Contact Tracking App support in iOS went active, I was interested to see how many people are using such an app.
Unfortunately Apple is hiding such service beacons from any BLE sniffing app with the lastes iOS. So I could not use my iPhone for such a task.
Next idea was to write a little application for the ESP32 utilizing the small TFT offered by the M5-STACKs to show such information. And here we are! Please find the code on Gitlab: https://gitlab.com/mschmidl/covidsniffer Feel free to use, but please remind the german HINWEIS ;-) at the end of the README.