Hello WAYNE!

22 Apr 10 07:19, you wrote to BOB ACKLEY:

 BA>> An early version of the technology is represented by the sensors
 BA>> at some stores' entrances/exits that set off an alarm if somebody
 BA>> is walking out with something that hasn't had its implant
 BA>> neutralized (IOW, shoplifting).

 WC> They operate like a grid dip meter detecting a tuned resonant
 WC> circuit.

 WC> Cleared at checkout by blowing a _fuse_ in the form of a particularly
 WC> thin trace that's part of the inductor half of the tuned circuit the
 WC> other half being a capacitor both being conductive traces printed on
 WC> the backing of the security tag.

Except that RFID actually transmit information back, the only thing that is
holding RFID back from full blown deployment in lets say, retail is the
chips cost, and they have to be able to transmit the same data as a UPC and
more. A sensormatic or checkpoint tags either transmit, lets say one bit of
info (live tag) or they dont (dead or deactivated). The range is far less
than what RFID is capable of.

Retailers however are wanting the tags to be able to transmit more than the
UPC data, which only identify the manufacturer/distributor and the item.
They want data they can use to identify the origin of the items, chain of
custody, lot numbers and be able to tell when the items came in the door
(receiving), and left (sold). In between they will be able to identify the
oldest stock for FIFO as well as id product that is or is not subject to a
manufacuturer recall.

What I like for these tags potential is it could be used to thwart
fraudulent returns of stolen merchandise and better enforce return
policies.

The shoplifting sensors you all talk about, most retailers utilize source
tagging, whereas the tag is applied at the factory or packager, in the
early days we had to apply the tags ourselves, which not only was time
intensive but we usually found the package destroyed and empty in the
restrooms or shoved in behind displays.. Home Depot for instance has the
maker of their Dewalt power tools, place a tag inside the tools handle.
Some of Walmarts high end work boots, have the tag sewn inside the tongue.
Shoplifter wants those, they have to destroy more than just the package or
be brave enough to run like hell for the doors.

==
Ross
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