If you're a headset devotee, you'll know that they don't always stay put on your ear. The Plantronics Voyager Pro UC packs capacitive sensors so it knows when you're wearing it—and when to direct calls to itself. More »

Read more: http://feeds.gawker.com/~r/gizmodo/full/~3/NmpbDKYFZYU/plantronics-voyager-pro-uc-is-a-headset-that-knows-when-youre-using-it