ICT&health January 26, 2026
Sleep trackers in the form of apps, smartwatches and rings are an integral part of the daily routine for millions of people. Devices such as the Apple Watch, Fitbit and Oura Ring promise insight into sleep quality, sleep phases and recovery. But experts emphasise that these technologies do not directly measure sleep. Instead, they derive sleep from signals such as heart rate and movement. This raises questions about the reliability of the data and how users should interpret the information.
The market for sleep trackers is growing rapidly. In the United States, it was worth approximately £4.5 billion in 2023, and revenue is expected to double by 2030. According to researchers, it is therefore essential that users understand what this...
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