A British startup company has launched a Kickstarter campaign to fund its latest innovation: a bed scale and tracker. Genetrainer has developed a new concept that features sensors being placed under the legs of a bed that track your movements throughout the night, the New York Daily News reported. The device, called Bed Scales , is capable of sensing your sleep cycle, measure your weight fluctuations while you`re asleep, and wake you up during a period of light sleep so that the feeling of grogginess is not there.