Jawbones Vision: Activity Tracking Now, Remote Control Tomorrow

Fitness bands like the Jawbone Up are in an unusual and enviable position in the electronics business: people rarely take them off.

If you wear a Jawbone Up24 around town, people might ask what it is. The wristband looks like a piece of futuristic jewelry, skinned in a rubbery plastic with a wavy pattern. Even in matte black, the most unexciting of available colors, it stands out.