What happens when the battery dies?

Smart locks warn you weeks before the battery dies via app notifications. If it does die, most have emergency power via a 9V battery or USB-C port, and physical keys always work.

Can smart locks be hacked?

Quality smart locks use AES-128 or AES-256 encryption. The greater security risk with traditional locks is lock-picking, which smart locks are equally resistant to. Auto-locking actually improves security versus traditional locks.

Best Smart Locks for Keyless Home Entry