In a few weeks there will be Dether mobile dapp release, then every person at any airport can be an ATM. That is, sell or buy crypto directly to each others using cash. Everyone will be able to turn on the dapp for example at the airport and see on the map how many around the people-ATMs 
That's interesting. I'm afraid in some countries it will be used for evil. For example how was the bullies that put feeders in Pokemon GO and expect it to fit people with phones.