"In fact, the idea of faking your own location through attaching your GPS anklet to a Roomba, for example, and letting it wander around the house all day is perversely brilliant, like something from a 21st-century Alfred Hitchcock film. Of course, it wouldn't take very long to deduce from the algorithmically perfect straight lines and zig-zag edge geometry of your Roomba's movements that it is not, in fact, a real person walking around in there—or perhaps it would just look like you've taken up some bizarre new form of home exercise."
Geoff Manaugh in Ghosts of Home Geography