Your Oura Ring can’t measure what’s going on in your skull

The article discusses a class-action lawsuit against Oura Ring, alleging the company misled consumers by claiming its smart ring can accurately track sleep stages. The suit argues that the device cannot measure brain waves and relies on AI models to infer sleep data, which it deems unreliable. The author, Victoria Song, initially dismissed the lawsuit but later recognized it highlights broader issues in how wearable tech is perceived and marketed. She explains that all wearables use indirect methods (e.g., motion, heart rate) to estimate health metrics and are not designed for medical diagnosis. While sleep stage tracking is less accurate than detecting sleep/wake cycles, wearables are valuable for monitoring long-term trends and lifestyle impacts. The article emphasizes that companies like Oura provide validation studies and educational disclosures, and the lawsuit’s real concern is ensuring consumers understand product limitations. The author concludes that wearables are not scams but tools for reflection and trend tracking, and the lawsuit serves as a 'check engine light' to improve consumer awareness and industry transparency.

(Source：The Verge)