esp-ena
Implementation of contact tracing with the Covid-19 Exposure Notification API by Apple and Google on an ESP32 (with ESP-IDF). More information about the Covid-19 Exposure Notification at Apple and Google. This is fully compatible with the official API and is meant for people without smartphone or without access to Apples/Googles implementation.
Tool for image to C byte array
git.bstly.de/Lurkars/esp-ena - repository
Talk
I held a talk about this @0rc3. You can watch it here [german].