Scrin, I think you are absolutely right, because when I first tried to figure out which of the tags “worked” I switched them off (isolated the battery) one by one only to find out, that I could always read the data from one tag, but I couldn’t see which one.
Now I tried by putting them in different environments (cold, hot and room temperature), and now I can, from the result, distinguish which tag is talking.
The Beacon Scanner app shows the MAC, so actually I already know who is who, but I think the test proves your theory.
Henri: No, I haven’t tested the .apk. I don’t know how to install from github to the phone(?)