The Guardian examines a sleep monitoring device that senses environmental factors to improve sleep quality.

British entrepreneur James Proud, 23, presents a white sphere the size of a tennis ball covered in a criss-cross pattern. “It is beautiful,” he says, when asked to describe it. “It doesn’t look like a piece of technology. We wanted to make something people actually want to put on their bedside table.” The device, called Sense, and the first made by Proud’s San Francisco startup company, Hello, is the latest in the world of sleep tracking devices claimed to help improve the quality of an activity we spend about third of our lives engaged in. It will be available in the UK early in the new year.