Oura is facing a proposed class action lawsuit in California that challenges the accuracy of its smart ring’s sleep tracking technology. The lead plaintiff, Madison Surber, claims that Oura’s assertion of 95% accuracy in identifying sleep stages is misleading, as the ring cannot directly measure vital indicators like brain activity or eye movement used in medical sleep studies. The lawsuit cites a 2025 study showing only about 53% agreement in sleep stage classification. Oura has denied the accusations and emphasizes that its technology, which relies on heart rate, movement, and other sensors, is not a medical device. The case raises broader questions about the reliability of health data presented by wearable devices and could influence how such companies communicate sleep tracking accuracy in the future.
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Link to original article source: https://www.legalreader.com/lawsuit-questions-oura-ring-sleep-tracking-accuracy/
