LinuxLingam wrote:
> RFID tags can be used to track anything and everything, for "your
> care,
> comfort, and safety".
Rght.
> yeah, right.
Ooops, you were being sarcastic ;-)
> people are setting of RFID sensors ('you stole something') at shopping
> malls and elsewhere, because even their US$20 currency notes and Euro
> currency notes contain RFID tags for 'tracking.'
I work with RFID, my employer uses this (we are a distribution company).
Being in Singapore, my car is "RFID-tagged" for toll charge purposes.
What the writer of the article below describes would require me to stretch
my knowledge of the technology too far. Why would the tag in the bill
respond to the probe for Gilette razors?
== QUOTE ==
> http://www.prisonplanet.com/022904rfidtagsexplode.html
Want to share an event with you, that we experienced this evening.. Dave
had over $1000 dollars in his back pocket (in his wallet). New twenties were
the lion share of the bills in his wallet. We walked into a truck
stop/travel plaza and they have those new electronic monitors that are
supposed to say if you are stealing something. But through every monitor,
Dave set it off. He did not have anything to purchase in his hands or
pockets. After numerous times of setting off these monitors, a person
approached Dave with a 'wand' to swipe why he was setting off the monitors.
Believe it or not, it was his 'wallet'. That is according to the minimum
wage employees working at the truck stop! We then walked across the street
to a store and purchased aluminum foil. We then wrapped our cash in foil and
went thru the same monitors. No monitor went off.
== END QUOTE ==
This does not sound like RFID at all. This sounds like the RF sensors,
normally placed to prevent pilferage (or mistaken under-payment, politely).
That system uses sensors which detect presence of transponder, not ID of
transponder. That is why the door through which you leave can be 3 feet
wide. For RFID, (the "ID" is important), to set of on a transponder the
size of Mr Jackson's eye, I would need under 4cm distance, at current power
levels. That means you would have to roll over the sensor to ensure that
you were not stealing anything; you figure out the rest.
LL, you know I mistrust Govt much more than you do, but I trust technology.
The report you quote has factual errors, which is OK, but even worse, its
language is designed to inflame, not discuss.
Could RFID be used to identify notes? Yes. Track? Yes, but difficult (you
would need to be handling the note, or pass it through a scanner). Wands
would not do.
--
Sanjeev
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