It’s a fascinating area (sleep-assistants in general), and the form factor of this one certainly appeals – an eye mask. The Dreamlight uses a combination of light/sound/basic genetic knowledge to help determine how deeply you’re sleeping at any point, and wake you when you’re at the lightest point – close to the alarm time of course.
For a bit of a look at the device itself, a spot of video :
The Dreamlight Sleep Mask.
NB : We first looked at this one in the weekly Strength & Fitness Newsletter (part of the Strength Kit). If you'd like to have it sent to you automatically (free!) each week, just add your email here.
We also discuss a number of training-related books. If you're looking for the full list of the ones I'm checking out personally, swing by Goodreads. You can also suggest new ones there (or via this site's contact page) - I'm always on the lookout for more literary goodness.