RE: RE: RFID Human Implants - Occupancy Detection

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

I have it in front of me

The RFID disc is inside the keyfob (easily pried apart, just clips back
together)

The disc is 30mm Diameter and 0.7mm thick,  the embedded coil antenna is
25mm od 19mm id

picture here www.dave.ward.freeuk.com/rfidtag.jpg

Dave


-----Original Message-----
From: Ward, David [mailto:DAvid.Ward@xxxxxxx]
Sent: 08 February 2005 11:27
To: 'ukha_d@xxxxxxx'
Subject: RE: [ukha_d] RE: RFID Human Implants - Occupancy Detection



Pete

IIRC It's quite large in diameter around 25 to 30mm I think,
but only 1mm or
so thick

I'll try and remember to check tonight


Dave

-----Original Message-----
From: Pete Shew [mailto:ukha_d@xxxxxxx]
Sent: 08 February 2005 10:54
To: UKHA
Subject: [ukha_d] RE: RFID Human Implants - Occupancy Detection



David,
can you remember what size the thin PCB disc is inside
the keyfob? I presume it is mostly a coiled aerial. I am hoping
to get a tag small enough to be carried by our cat because a)
the Staywell cat flap key is large and awkward shaped, and b)
it doesn't have a very good detection range, especially from
outside. Mounting an RFID reader aerial just below the door on
the outside would seem to give a closer range.

Pete

-- Original Message --
* From: "Ward, David" <DAvid.Ward@xxxxxxxxxx>
* Date: Thu, 27 Jan 2005 10:18:31 -0000

Yup,  those are the ones I have

his site is http://home.btconnect.com/QTEKNOLOGY/
for more info

If I remeber correctly the keyfobs come apart easily and inside
is a very
thin PCB disc with the RFID IC embedded in it.

FWIW I The reader sputs out serial data in the of the Animal ID
tags in our
cats,  now I just need to get Cat, Reader, DSO or PC together
in the same
place to work out the code
hmmmm I wonder If pronto could store the code If I modulated the
bitstream?.....

I think this is going to turn out to be one of those projects
that requires
a whole box of 'Scooby Snacks' :-S