SONY ERICSSON has unveiled the world's first motion activated headphones that apparently know when you are listening.

The MH907 earphones from Sony Ericsson can automatically pause music from a connected device when a single earpiece is removed, then resume the playback when the earpiece is reinserted, without any user interaction with the handset.
The process of taking a single earpiece out is also used to answer a call, where music playing can be resumed when the earpiece is reinserted once the call has ended. Reinserting the earpiece can even end the call itself.
This technology is called SensMe and responds without a single press of a button on the handset, placing the control of this function in the trust of the earphones.
No details were available on pricing or if and when the MH907 will accompany a Sony Ericsson mobile phone, but we expect that Sony's next music player will include this as an option.
Sony Ericsson hasn't said what happens if both earpieces are removed at once. We assume that the track being played will be stopped, but how would you tell? µ
What if i want to listen to music on only 1 earphone for some reason? Like talking to someone while listening to music, or to listen to what's going around while driving?
I don't take the bus, I drive a car, and I'm not dumb enough to listen to music while walking around town. But listening to music while working out, then having a call come in, and have the music turn on by itself after the person hangs up, is great.
You might enjoy listening to a phone conversation with both earphones, but your fellow bus passengers are sick to death of you shouting into your phone.
Oh, and mind that reversing truck over there.
Sony Ericsson already has a great set of earphones, the HPM-70. You answer a call by pressing a button on the clip-on mic, and end it the same way. And listening to a phone conversation with 2 earphones is actually enjoyable.
Schrödinger's headphones?