[Satan]

I remember reading about the wifi thing, where they could use the way the radio waves bounce to basically "see" inside a room. I think this unit is defeated by concrete or metal walls.

Also defeats the purpose if they don't have WiFi. I've been to grow ops that don't. Everything local network run, and I think one of them had waffle against this type of thing @ OP. Makes me wonder how the sound proofing, and noise dampeners would affect OP machine.