On 2008-01-20 10:12:03 +0000, (Andrew
Gabriel) said:

In article ,
"Bob Eager" writes:

Amazing that no-one has yet produced a cat flap that reads the cat's
RFID chip, instead of the heavy magnets.

They have. One of my staff at a former job fitted one.
I think he had to import it. It reads the standard RFID
tags fitted to pets by the vets. You can program several
in (he has two cats).

That's useful to know. I was unaware that the vet ones used RFID.
Cat Mate, and a couple of others have RFID cat flaps. However, they
require the use of a tag attached to the pussycat, which is about as
much use as a chocolate teapot because they will lose them within a
day; and collars on cats aren't a great idea anyway.

I did just spot one called Pet Porte which uses the cat's implanted
chip, which seems to be a rather better idea, and besides, it's
somewhat pointless not to have a cat microchipped.