[diydsp]

The newly-built, PV-covered stop&shop on the way home from my work has a flat, black board with the name "Motorola" on it hanging over the entrance. Presumably, it's full of antennas. Since Google acquired Motorola, I'm sure this data is being resold and who knows what kinds of restrictions there are.

It is unknown what signals it records. It would be nice if someone who knows cell phone signalling can chime in on how much is legible in this way.

As far as legal records, well, everyone on HN probably knows how easy it is to fake a WiFi MAC address and make it seem like someone was at the scene of a crime, or seem to be innocently hanging out somewhere else. So subpoena'ing this information might not lead to useful evidence, but probably to lots of confusion and prosecutorial mistakes and disasters. I would love to know how easy it is to fake a cell phone IMEI or other identifying info.