Tyre pressure readable remotely using RFID devices embedded in tyres.

Just imagine - remotely readable RFID devices in every tyre.
They say 500mm range max used at present to ensure correct tyre is
being read. ie suggests practical range is liable to be usefully
higher.

Interestingly, they interrogate and send power at 125 kHz but get
pressure mack at 433 MHz using (they say) frequency offset of signal
as pressure indication. Presumably the actual modulation is somewhat
more sophisticated than that implies. It certainly easily could be.

I've put this in [OT] as I imagine others may be able to think of
other uses for such technology.

                  http://www.rfidjournal.com/article/view/9697
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