Scientists in Germany have demonstrated a startling new form of surveillance: identifying people using nothing more than ordinary WiFi signals. By analyzing how radio waves bounce around a room, researchers can effectively “see” and recognize individuals — even if they are not carrying a device and even if their phone is turned off.
I don’t think anyone choosing this method cares about a week or two. That’s a payday my guy, you could blink. I live my life two weeks at a time and years have gone by in seconds =P