This smart ring makes a blood pressure promise Apple and Oura still won’t
The $399 Signal Ring promises cuff-free systolic and diastolic readings without calibration, but missing FDA clearance and unpublished clinical results make keeping that old arm cuff the sensible move.
Your Watch Will One Day Track Blood Pressure
Your smartwatch can track a lot of things, but at least for now, it can’t keep an accurate eye on your blood pressure. Last week researchers from University of Texas at Austin showed a way you smartwatch someday could. They were able to discern blood …