A few redditors on the Pokemon Go subreddit are trading tips on GPS spoofing, which involves running a rootkit to take control of an Android device's operating system, installing various unapproved bits of software, and letting these new programs report a GPS location of your choosing. In fact, this method can even do your walking for you. As one user wrote, "Make sure you change locations at a human speed... there is a setting at the bottom that automatically moves location randomly. Set the distance to something small so you move as if you were running (maybe a bit faster) and just leave your phone on to gain [kilometers]."
I use the same technique with my FitBit.
#scitech