I guess we only find out if some people order those chips and check if there is some data. From my understanding the idea is the same like maps showing air planes or ships (for ships it’s AIS). So without volunteers/pioneers who participate we won’t know. It seems like traffic lights and trams also can send data.

The map is based on international standards and technically it does not restrict locations to German speaking countries.

The authors of this project also shared that they intend on publishing more around this project. This seems to be mostly an early demo that was intended for the live event.

The Germans and Danes and Swedes and Norwegians I see on the Internet developing and publishing software often have a better grasp of the English language than many born in the USA Americans.