Entering the market of self-surveillance for sleep, via Kickstarter, Sense promises to be a smarter tracker that you don't have to wear.
It's a two-part system. The first part is a sphere that logs your surroundings such as noise and temperature. It sits on your dresser. The second part is the "Sense Pill" which clips on your pillow case to record movement. Data syncs to your phone. And if you have a second person in your bed, you can just get another pill to record sleep on that side too.
Looks promising. They're well over their goal, but if you want to get one as an early backer and at a discounted price, there's one day left in the Kickstarter.