evidence: Today, a new generation of blood pressure devices aims to make it easier to diagnose—and control—hypertension. Unlike traditional devices, they do without the arm cuff and offer blood pressure values on demand, should the user press their finger on a sensor, or continuously, if measured by a watch, ring or bracelet. [...] The development of these devices for measuring blood pressure without a blood pressure cuff is progressing rapidly, but that doesn’t mean they are ready for use in the medical world. "Unfortunately, the pace of evidence, regulation and validation testing has lagged behind the pace of innovation and direct consumer marketing," write Stephen P. Juraschek, physician investigator at Beth Israel Deaconess Medical Center in Boston, and colleagues in a review published in September in Current Cardiology Reports. [...] But, encouragingly, the study also found that "smartwatch-based cuffless [blood pressure] monitoring is feasible for out-of-office monitoring in the real world"—as, on average, participants measured their blood pressure 1.5 times per day.