1881048uI remember, many years ago, when I used to have a couple of cats, our back door was fitted with a cat flap to allow them to come and go as they pleased. Unfortunately it wasn’t just our cats that made use of this flap and on more than a few occasions we’d have to chase off other cats who fancied their chances of making off with our cat’s food.

Back then the height of cat-flap technology amounted to fitting a small piece of clear plastic with hinges in your door. These days it’s getting quite clever!

Introducing the RFID Cat Flap! The cat-flap for folk who dislike other peoples cat’s coming in their house. It’s created by an Instructables user called ‘Landmanr’.

Using an Arduino, some wire, a standard domestic cat and a few other bits and pieces he created a cat flap that only opens up for his cat (or any other cat that’s clever enough to steal the RFID tag from his cat’s collar)

Check out the video below.

For more information, including a step-by-step guide to making your own continue to Instructables –
http://www.instructables.com/id/RFID-cat-door

Source: RFID Cat Flap