Los demandantes sostienen que los anillos no pueden medir directamente las señales necesarias para determinar las etapas del sueño y que sus resultados son estimaciones

The lawsuit alleges that Oura rings are unable to measure any of the physiological signals needed to assess sleep quality or determine sleep stages.

Oura rings are popular tools for measuring how well Americans sleep. A new lawsuit alleges, however, that much of the data is really hogwash.