THE SMART LOCK
For $219, Kwikset's Kevo system will unlock the door while your phone's still in your pocket, useful if your hands are full. You train it so that it opens only when you're right outside the door, not down the block, or worse, inside the house late at night.
Although I'm nervous that someone will find a way to circumvent the safeguards, it's useful in that you can give guests, nannies and contractors temporary digital keys. You can set parameters - such as working only during certain hours. An upcoming Plus offering will let you check remotely whether you remembered to lock the door - and lock it if you forgot. It would be more useful if it could do that automatically, using motion sensors to detect that no one's home.
