There are many companies now producing 'smart' locks that allow you to open and close your front door lock, from anywhere in the world. The main feature seems to be the door recognising you when you're near and automatically unlocking it. Another popular feature is the ability to check wether your door is locked on your phone when your at work and allow you to lock it.
Does this improve the user experience over a traditional lock?
I have an mechanically locking lock that simply locks whenever the door is closed. You always need a key to get in. Example below:
When you leave the house, this type of lock adds direct feedback that the door is locked by trying to open it (it won't open). Since the result is always the same there's no worrying about that at work. After closing the door behind you and checking if it's locked, the smart lock won't be locked as you are still near (within wifi range / camera vision). If you try to open it, it will open. Therefore you might want to check that it's actually locked when you get to work.
The 'smart' lock removes the direct feedback from the interface (the door) for the benefit of not needing a key. (Unless you're battery is dead)
In a situation where security is key, what gives a better user experience?