> Hate to tell you but there are tags that work @ 900mhz and higher.  We
> found them when working on a couple of RFID projects. Check out the
> antennae on truck scales and toll tags for bridges. Ponchartrain bridge
> across Lake Ponchartrain in Louisiana uses 900mhz.

        Those are completely different apps where the cost per tag isn't supposed
to be <$0.10, apples vs. oranges. We are talking about, essentially, a
replacement for the UPC barcode on items. Cost per tag has to be in the "few
cents" range, I just don't see higher frequency techniques getting there
before lower frequency solutions. TTYL

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