Hey. very cool concept. Definitely a game genre that could use some love.
It didn't seem like letting anyone in was ever the right call, regardless of the ID. Which is certainly one kind of message for the game to have lol. Also, it was possible to simply mash the 'Refuse' button until the day ended, and the knocking sfx would all play at once at the end which was pretty funny.
Would be awesome to see this taken further, I think it's a really cool idea. Great start!