Outside of the Moto X, hands-free voice commands on Android are limited; pick up a Nexus 5 or Galaxy S5 and you'll find that "OK Google" only works at the home screen. If Android Police's sources are accurate, though, you'll soon get to bark out orders no matter where you are in the interface. Google is reportedly trying out an "OK Google everywhere" feature (mocked up here) that, much like the Moto X, is always listening and responds only to your voice. It might also pay attention to what you're running. If you're browsing snapshots, for example, you could tell your phone to "share this photo."