Pfft, reckons they could be made maybe for 20 cents....
And the proposed solution consumes more power because the carrier wave will be set up and running permanently.
For anyone in the know on this project: how are they going to have access to the 900 mhz spectrum when there's a ton of GSM/Cellular resources already using the spectrum?
How much data and how fast? No power is useless with a bitrate of 1 bit per hour.
This is old technology. Everyone's favorite three letter government entity loves these types of things! It's called RF illumination