Super-Scanner gadget cat-flap!

New house - new doors - new cat flap needed.  Now, you know me, wanted something different and gadgety.  Well the 'SureFlap Microchip Cat Flap' is just that sort of thing.  I know what you are thinking - nothing new - cat has chip in collar, gets let through door.  Well - NO - this *IS* different.  It uses the RFID chip already embedded in the cats (the ones we had surgically implanted when they were young) so they cannot lose them - awesome!  Link in title...