Plantronics has recently opened PLT Labs, a skunk works intended to help developers access the functions of the new generation of wearable technology. They propose to offer access to the new APIs exposed by prototype devices.
One of the more magical feature of the Plantronics Voyager Legend is the way it knows when you’re wearing it. If the headset is paired to my cell phone and I’m wearing the headset it will answer an incoming call.
If I’m not wearing the headset and I answer the phone using the handset itself, the headset knows to not involve itself in the media handling. It remains paired but switches the phone out of headset mode.