Amazon's Echo is about to become much more useful if you've ever worried about leaving the door unlocked. August Home is introducing an Alexa skill that gives you voice control over its Smart Lock system. If you have a first- or second-generation lock with an August Connect bridge, you can ask Alexa to both check a lock's status and lock the door. It's a simple addition, but it beats having to pull out your phone or walk across the house simply because you didn't remember to lock up when you got home.