ReadiBand - sleep tracking from your wrist

ReadiBand is a wristwatch-like device which tracks wrist movements to estimate how you are sleeping:

Our scientifically proven system is highly accurate. A recent study showed that the ReadiBand™, coupled with our patented classification algorithms, assessed sleep virtually as well as sleep lab polysomnography (93% accurate).

Based on ReadiBand™ data, we provide a range of sleep statistics, such as sleep efficiency, sleep duration, and time to sleep onset. In addition, once the ReadiBand™ data are automatically processed through our patented and validated computer model, fatigue risk levels are calculated and displayed

The ReadiBand was recently used by the Vancouver Canucks in their NHL playoff run. In the video about the Canucks, they also mention wearing the device 24x7 and measuring the impact of sleep on reaction time.

I'm trying out a fitbit now. I wonder how ReadiBand compares?

Zeo: A Personal Sleep Coach

Zeo is a product to capture a person's sleep characteristics as measured by depth e.g. light to deep, REM sleep times by wearing a sensor headband that transmits one's sleep state to a nearby bedside monitor. The bedside unit capture data over a long time period and is the basis for a "Seven Step SleepFitnessProgram" to improve the quality of sleep.   The Zeo Bedside Display "uses algorithms and artificial intelligence software programs to track electrical activity in the brain to determine your sleep phases throughout the night. This includes length and depth of your sleep, awakenings, and a measure of a single night of sleep, called ZQ, which Zeo has created to help educate you about your Sleep Fitness."  Zeo's optional "Smart Wake(TM)" can also wake you at the "best" time. 

For anyone usingf pedometers, exercise heart rate monitors, or any other health fitness devices including BodyBugg, this product looks to provide significant health benefit!  In terms of recording your entire life knowing something about your sleep says a lot about the rest of your life.