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

["Ward, David" <DAvid.Ward@xxxxxxxxxx>]

I have seen commercial electronic Cat flaps that use a fob that has an IR
emmitter in it
If you were crafty with a PIC10F microcontroller you could make one

Dave

-----Original Message-----
From: Pete Shew [mailto:ukha_d@xxxxxxx]
Sent: 08 February 2005 13:38
To: UKHA
Subject: Re[2]: [ukha_d] RE: RFID Human Implants - Occupancy Detection



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?
>
>
>
>
>
>Yahoo! Groups Links
>
>
>