Rain Drops Signal Cell Phones
An anonymous reader writes "Signals from mobile phone masts have been used to measure rainfall patterns in Israel, scientists report. From the BBC article: 'The University of Tel-Aviv analyzed information routinely collected by mobile networks and say their technique is more accurate than current methods used by meteorological services. The data is a by-product of mobile network operators' need to monitor signal strength. If bad weather causes a signal to drop, an automatic system analyzing the data boosts the signal to make sure that people can still use their mobile phones. The amount of reduction in signal strength gave the researchers an indication of how much rain had fallen.'"
Google for cell phone radar ppl eg. Celldar
Cheap, always on, very hard to kill, nice world wide exports.
If it is targeted, you have the best PR ever?
http://www.roke.co.uk/sensors/stealth/celldar.asps _33_48/ai_90445280
http://en.wikipedia.org/wiki/Passive_radar
http://www.findarticles.com/p/articles/mi_m0EKF/i
Domestic spying is now "Benign Information Gathering"