I was looking for a new demo application and we've done model trains before. As usual, a real-life problem, this one involving building management, presented itself.
We have two cats in the house. We have a very fat black cat and a semi-wild skinny black and white one. A very hansdome ginger tom has taken to coming through the cat flap, feeding itself and spraying, which is the problem.
Naturally this happens at night when the humans are asleep. Collars and magnetic cat-flaps are not an option. Can anyone suggest an inexpensive and reliable method of determining which cat came through the cat-flap? I really don't want to implement the counter-measures until this problem is solved! Our cats are not chipped.
Stephen