Players use fake GPS apps to pretend they are in a location to catch rare pokemon. I saw my brother's phone "travel" from London to Seoul in South Korea in fro

Players use fake GPS apps to pretend they are in a location to catch rare pokemon. I saw my brother's phone "travel" from London to Seoul in South Korea in front of my eyes and catch some rare pokemon there. Pokemon Go bans them when detected, but not all get caught. They don't even bother simulating a proper travel. They just teleport which I find hilarious.