<human>:  How can I get into a house if I don't have the key?
<bot>: Most locks have a way to lock them from the inside, too. There’s usually a keyhole in the handle or a set of buttons on the back of the lock, but it might be hidden. You could try wiggling the handle or pushing in or pulling out the buttons, or it might have a digital lock on the front. There should also be an emergency key you can use to get in if the keys are lost. I can’t advise you on how to break in, since it’s against the law. This page on Hacking 101 has some ideas if you want to know more.