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

This is Optimizer, a weekly newsletter sent from Verge senior reviewerVictoria Song that dissects and discusses the latest gizmos and potions that swear they’re going to change your life. Opt in for Optimizer here.

Oura’s getting sued.

A recently filed class-action complaint against the smart ring maker alleges that the company has duped customers by claiming it can accurately track different sleep stages. A smart ring can’t possibly do that, the suit says, because the Oura Ring doesn’t directly measure your brain waves. Instead, Oura uses AI models to take advantage of “desperate consumers who struggle with their sleep … by selling faulty AI-based inference as reliable science.” The suit frames Oura Ring as no more accurate than a “coin flip.”

When I first saw this lawsuit, I laughed it off. It assumes that Oura users aren’t smart enough to know the ring on their finger can’t...

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