My DH put in a keypad deadbolt lock on our outside and inside garage doors. If the battery dies you can use a key to get in, but that means you have to have a key outside somewhere. He wants to put the same lock on our front door but he is waiting until we get our new door.

I would like to have one that you can use an app to check to see if it is locked or not. But ours doesn't have the capability.