Plus you could think of some kind "Proof of visiting location", so other users have to confirm that
A "proof of location" service would be something you could make money off - even if you limited it to the country.
For example, taking a picture in front of the Eiffel Tower would prove you were in France. AI can eliminate the fakes, but it needs to be automated.
XYO does not have the feature. I can spoof my location as mentioned. I can duplicate the bluetooth/nfc id, even in Poland.