Interesting idea. Dividing England into 3m^2 blocks requires about 34 bits of address space. But, then again, given the propensity of surveillance, just say "he

Interesting idea. Dividing England into 3m^2 blocks requires about 34 bits of address space. But, then again, given the propensity of surveillance, just say "hey, this is <your name here> coming home from work" -- should be enough clues to let Big Brother figure it out. CCTV is your friend.