STORY-TRÅD·teknik

Vital Signals Announces $399 Signal Ring That Gives Blood Pressure Readings

A three-year-old startup says it has produced a smart ring that can track blood pressure as accurately as a traditional arm cuff and that — eventually — it could be able to make medical diagnoses. If the company, called Vital Signals, can successfully deliver on the promise, it would represent a significant breakthrough in consumer wearables.