longest range rfid's planned to be commonly used (UHF range)
transmitters and receivers that are capable of transmitting and
receiving the responses through all of the radio noise, then
triangulating where the response is coming from, there isn't much we
can do to keep them from invading our privacy anyway.
The absolute maximum range on reading the response from a UHF tag is
around 100 meters, more like 3 in real life. I don't think they will
be using microwave rfid's anytime soon...
http://members.surfbest.net/eaglesnest/rfidspct.htm
For the super paranoid, building a RFID jamming device isn't that
hard (Of course, the FCC might come knocking on your door :)), I read
somewhere UHF RFID is somewhere around 925Mhz in the US. Even
keeping a radio on the right channel 24/7 so you have advance
warning when the super grocery spies are on the prowl so you can run
into the airtight tin-foil lined room in the center of the house for
just such occasions would suffice in keeping our preferred brand of
razor secret.
--
jon
mailto:[EMAIL PROTECTED]
Monday, January 12, 2004, 11:10:34 AM, you wrote:
JJ> Wrong.
JJ> They are built into the packaging. It is not the store that is going to add them to the package, but the manufacturing and packing process.
JJ> What I want to know is how far will they be detectable from? Will a company be allowed to drive down the street and see who has a Gillette razor in their house?
JJ> This is an invasion of privacy if there ever was one.
JJ> Or should we, in this day and age, trust implicitly that corporations would never do anything against public interest?
JJ> Right.
JJ> Jerry Johnson
>>>> [EMAIL PROTECTED] 01/12/04 10:40AM >>>
>>Besides, not every store on earth is going to use them, just
JJ> go to one of them if you are concerned.
JJ>
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