Before you have not solved this problem, your coins will never be worth much, because it is to unsecure to place them at a geolocation.
So, this mean that we need to go to buy more GEO before the problem is solved?
If there was an option to "lock" coins so that you could see them but only someone else with the "key" can pick then up this would Discourage spoofing and allow for interesting use cases without having to use other blockchains to send money to loved ones. " hey Dad i dropped the geocoin outside your door you should be able to see them with the app. The password is (familysmoney) or whatever).
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Your idea is very interesting and i can imagine how that would work in a real life. That`s the beauty of this project, it has so many room to improve itself. As i know, this is the only project which has implemented together two of, let`s say, ten most important future technologies, blockchain and augmented reality. Dev is a pioneer of a completely new technology, full respect. According to some exploration main stream adoption of blockchain and augmented reality can be expected 5-10 years from now, so let see what will happen.