Cat Recognition

i was browsing around looking at different cat doors. (we are putting one in the sash window in the living room for our cat, the one from the old house was for a different window size, shape so i was looking to see what else was out there.) ran across this very, very cool project where the cat door recognizes that the cat wants in and lets it in. like in these pictures.

but then if the cat, flo, has some critter. say a mouse. the door locks and doesn't let the cat in. way cool. or if something else comes along, like a skunk, it is rejected too.


i highly reccomend the website quantum picture, specifically the flow control project.