radio waves

A new scan to test for breast cancer using radio waves is being trialled at a Bristol hospital.

RFID, a technology that allows identification of objects using radio waves, hasn't exactly been a failure. The Wikipedia article on RFID lists all manner of examples of RFID use ranging from the whimsical to the more substantive.

And early proponents of RFID, such as Wal-Mart and US Department of ...