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RFID

Published 12/19/03

Filed under: Miscellaneous

Errata and Such::

In my column, I envisioned theives roaming parking lots and scanning the RFID tags of items in people’s trunks. With current RFID technology, that’s not doable: The tags don’t work well through all the metal surrounding the trunk. Stuff in the back seat, however, is fair game.

The image in the column shows an RFID tag next to a quarter. An alert reader (whose name I will add as soon as I find it) pointed out that the picture showed a tag without the antenna. If you add an antenna, the whole package is close to the diameter of the quarter (but flat). That’s with today’s tags; expect them to shrink and shrink.

Coming Soon:

Another alert reader wrote to discuss the differences between various RFID technologies — different frequencies, ranges, etc. There wasn’t enough space in the USA Today column for it, but I’ll summarize it here soon.

The Fray

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