Those who have been following this blog know that we’ve been having cat-feeding-box issues recently … first Winnie’s door broke so that it was letting either cat in, then Winnie’s replacement door had a stronger internal magnet, allowing Parker’s electronic tag (with a ferrite core in it) to open her new door. We swapped the doors, but Winnie quickly learned that she could now get into Parker’s box. So we ordered a second new cat door (of a different brand), and we now have Magna-Parker and…
RFID-Winnie!