cdb wrote: > This means my cat flap operated via RFID could be back on the agenda. > > http://www.murata.eu/mm/2007.html > > Of course trying to get hold of just one to play with will be near > impossible I suppose. That's pretty cool. The closest I ever came was thinking about using an implanted microchip as authentication for the cat door. But I was never convinced it would reliably work, since you almost need contact with the cat for detection. Here is a link to a homemade microchip scanner. looks pretty easy, as long as you know which protocol your cat's microchip is using: http://max-gpl.sourceforge.net/ Cheers, Bob -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist