[oclug] RFID water readings

[Rod Giffin]

Quoting miden <miden at travel-net.com>:

> the meter directly. Radio metering would be welcomed by him/her I'm
> sure. Power for the unit? How about Solar? My calculator has been
> running on a little solar cell (under room lights) for many years.
> Can't
> require much more power than that.

Power requirement for RFID devices is very very low.  In fact, they 
usually work without any external electrical connection, instead, they 
can use power extracted from the radio signal from the reader itself, 
and they've been developing RFID devices for the oil & gas industry 
for a while.

Rod.