Tech wants to solve our tech-related sleep problems

Technology is bad for sleep. It keeps us constantly exposed to an endless cycle of bad news, and the blue light emitted by smartphone and tablet displays suppresses our ability to produce melatonin. Combine that with the feelings of inadequacy generated by watching other people's picture-perfect lives on social media, and it's no surprise that we're all restless. Sleep technology exists to solve this issue, and there were plenty of companies exhibiting new devices here at CES 2018. Many of them intend to tell you how well, or poorly, you have slept each night, in the hope you'll make better decisions the following day. But, as well as becoming more commonplace, sleep gadgets are going to become far more diverse, at least according to what we saw at the show.

Smartwatches and fitness trackers have tracked sleep for years, using the principles of actigraphy: Monitoring how you move as you sleep with algorithms used to calculate your cycles. The less you move, the thinking goes, the deeper your sleep.This week, companies like Nokia and Emfit both launched new underbed sensors that do the same job, but without a device on your wrist. The former will track your sleep duration and quality and offers a sleep-coaching function if you're having trouble n...