GPS traces used to target bikes

O rly? Mine can reliably distinguish between two parallel paths down at Dorney Lake which are less than 3m apart, so could easily separate one gateway from another even in a fairly dense urban terrace.

As far as I'm concerned, yeah. Just looked through my history on garmin connect and I don't believe there's any way someone could know which house I'm in, especially since my neighbour's door is adjacent to my own.