Interesting.
Did you hear for XYO Network project ? https://bitcointalk.org/index.php?topic=3040825.0

Its a first, decentralized Proof of Location network.
You download app on your smartphone and by moving in the real
world, device determine if you are at specific XY- coordinates and as reward
you get "coins"  which can be exchanged for XYO, ethereum based token.

There is a lot of use cases like payment-upon-delivery services, package tracking, etc.
and everything is recorded on blockchain in real time.