Let us know what commons you will be testing, I will be doing the same once I get my tester. I think a way to tell different mushrooms can be done but I need to see the data first. I was thinking we could build an app that says ok to eat (green) and do not eat (red). Maybe even have like info about the mushroom identified like a book.
That paper was about coffee quality I didn’t see that they tried to find out what location it came from. You might be able to find a contaminate or something that is specific for a region I think it will be very difficult.