Besides keeping you from crashing while gushing to your BFF, today’s hands-free Bluetooth audio headsets sport a surprising range of features from compatibility with programs like Jott to optional goofy voices. Now you can add motion controls to the list, as the accelerometer-enabled Jawbone ERA, available in four colors (e.g. “smokescreen” and “shadowbox”), introduces motion-sensing capability. Beyond offering intelligent noise cancellation technology for chattering while walking down busy streets, it actually lets you shake the device to pair with a mobile phone, or tap your finger to answer calls. But more compelling than high-definition (HD) audio for enhanced talking or music listening, a 25% larger speaker than predecessor the Icon and support for ongoing software updates through the MyTalk platform are downloadable apps. Now that the headset’s motion enabled, it’s anyone’s guess which new features will be added, or how safe they’ll be to pound out while driving in the car.