Re[2]: RE: RFID Human Implants - Occupancy Detection

["Pete Shew" <ukha_d@xxxxxxxxxxxxxxxxxx>]

Our cat is chipped, but my understanding is that the antenna on the chip is
so small that the reader has to be essentially in contact with the animal.
That's why I'm looking at an alternative to hang on her collar to operate
the cat flap.

One thing that concerns me is that an external RFID would possibly mask the
internal one if she got lost, but I suppose if she still had her collar on,
then her email address and phone number would still be with her.

We didn't have to bother with this nonsense until we found a recent new
neighbours cat coming down our stairs!!  :-(

Pete

*********** REPLY SEPARATOR  ***********

On 08/02/2005 at 12:58 Mark Kaye wrote:

>Ward, David wrote:
>> Well,  these ones I bought from QTEKNOLOGY certainly detect* the
>presence of
>> the 'PetLog IdentiChip'  in our animals
>>
>>  <http://home.btconnect.com/QTEKNOLOGY/>
 (Check ebay as he sometimes has
>> stuff on aution)
>>
>> When I say detect*, I mean that as a quick bodge I bunged an LED
on the
>> data-out line of the RFID reader IC,  when I run the aerial over
the
>chip in
>> our Cat or the fobs it was supplied with the LED lights.....
>>
>> I have yet to determine if hte code it's spurting out is valid or
just
>> garbage that's not repeatable
>> Also the read range of the small antenna supplied with the board
is about
>> 10mm (measured from the OUTSIDE of the aminal ;-)
>
>How cool,  I'd be very interested if, somehow the detection range could
>be extended.  How practical would it be for a catflap if the cat has to
>get its chip within 10mm or so of the reader?
>
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>Yahoo! Groups Links
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