Well, hijack, but IME that doesn’t help. They just learn to scratch on the door and keep you awake until you cave and open the damn door.
FWIW
I’ve had cats and there is a very easy way to cure them of that habit. Take a ballon and blow it up. Wait by the closed door and when the scratching starts, stick the opening under the door and turn it loose. The loud “farting” sound combined with the air blowing out on their fur will scare them badly and they will no longer come knocking on your door.
I’ve never had to do this more than twice to train a cat. It works a treat.
And on the lighter side of things, I highly recommend Two Lumps to all the cat lovers. Here’s a link to their take on cats and doors.
I do know about cats scratching at the door- we frequently have to lock the kitties in the bathroom at night (with food and water and litterbox) because they reach planetary escape velocity at bedtime.
My husband and I live in a studio apartment. We’ll be moving in two weeks to a one-bedroom, with lots of run-around-at-night space for the kitties. I’m delighted- we won’t have to lock them up any more, and I don’t mind keeping our door open a bit as long as they do their running mostly in the kitchen, bathroom and living room.
What I’m really looking forward to is the ability to shut the door when they’re being exceptionally bouncy. I can sleep through the scratching, but I can’t sleep through cats ricocheting off my stomach.
What are you, some sort of wimp? We have nine cats, all of whom use my belly as a kitty-o-line (I didn’t feel like calling myself a tramp), and I’ve never suffered any ill effects (other than bruising, scratches, pulled hair, or a mouth full of cat fuzz)!
After my cats experienced the sort of reflexive cat flinging that happens when they land on me in my sleep, they stopped landing on me in my sleep.