Hi,

Hopefully someone on the list can help. I'm looking for an active RFID
tag that can be run from very low current and is sold as a discrete
item as opposed to a prepackaged in-plastic-with-battery tag. I'd
power the tag from solar or an alternate power source where the
circuit would transmit whenever it has accumulated sufficient power.
The range doesn't have to be far, 20m or so would be more than
adequate.

I'm also looking for a passive RFID tag that has about the same range.
Antenna size is not a big deal for my intended application. The
Hitachi mu-chip tags seem to have the right properties. Anyone have
any experience with this chip? A nice feature to have is the ability
to electronically write to the eeprom/flash that the passive RFID tag
uses as the source for the data it transmits. The info about the
mu-chip seems to suggest that at least one version of it supports
this.

Has anyone integrated an SPI or other type of RFID tag reader with a PIC?

Thanks,
Jim
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