In an attempt to help users get a better night's sleep, a company called WakeMate has introduced a product that will pair with the iPhone and other Bluetooth handsets to detect a user's sleep patterns and wake them up within a 20 minute window that is said to be the most efficient and healthy for the body. The wrist band is an actigraph and will infer the wearer's sleep pattern and circadian rhythms based on motions.

WakeMate claims that users will feel less groggy and more energized by using its product, which can even work with short naps. The WakeMate program will also analyze a user's sleep over time, and give them a rating on how restful their sleep was. It can identify trends in a user's sleep patterns after a few nights have been logged and give them personalized instructions on how to improve their sleep.

The WakeMate is said to work with all Bluetooth phones, though they need to support the necessary app. The hardware and software bundle will cost $50 when it ships at an undisclosed date. [via RedFerret]