RF ID = Radio Frequency Identification System. Use a RF ID device: The RF ID device is a very small integrated circuit chip made up of a Radio transmitter, microprocessor, each chip programmed with...
Mostly it's industrial because the main purpose is to track item's movement from one location to another. Read more about http://www.rfidtrackingsystem.org
Note: Impossible to answer unless you define exactly what you mean by " radio 5". Did you mean BBC Radio 5 in the UK? If so did you mean Satellite or land based Broadcasts? For land based...