This doesn't stop the dog sleeping near the door and every time it moves it opens up.. Or other animals entering while your dogs enters.
Its a bit of a stretch but any would be thieve just need the collar from your pet to enter the home. And very likely the cat will remove the collar and leave it god knows where. Cats are great at getting their collars off and visiting other homes nearby..
Its a great concept but some wouldn't rely upon a pet with the keys to the home..
Im not that worried but I think my bike wouldn't last long unchained in the front driveway.
and I will have to lock the garage door and just leve the side door ajar.