> Directly doesn't work over the internet, because the internet doesn't work like that. You'd be restricted to bluetooth, wifi direct or similar. That is how "

> Directly doesn't work over the internet, because the internet doesn't work like that. You'd be restricted to bluetooth, wifi direct or similar. That is how "the internet" has worked forever. People have been running servers on their own home machines, for a long time. If you really want you can setup a webserver/sshd/etc. on your own machine and access it from the outside if you don't care about DNS and static IP. Will also probably need to port forward at the router, though. Its less common nowadays due to the cloud, and security issues, etc. sure. And I'm not sure to what extent its possible over mobile. But for two people who are on PCs/Macs, it should definitely be possible. And it would be much lower latency because you don't have to bounce it off another server.