You can also remotely unlock it to free up a hand while carrying groceries.
A smart lock can arm and disarm a security system, track when guests enter and exit, and eliminate the need to hide a spare key near your door. You can also remotely unlock it to free up a hand while carrying groceries. We like the Schlage Encode (about $300) for its durable construction and built-in keypad that allows you to give out guest codes.