Smart Bands may be able to do it using Pulse Wave Velocity<ref>https://en.wikipedia.org/wiki/Pulse_wave_velocity</ref>, which measures the time between [[ECG]] pulse and [[Pulse oximetry]]. [[Fitbit]] recently started a study for customers that use a ''Fitbit Sense'' to evaluate whether this is feasible<ref>https://www.mobihealthnews.com/news/fitbit-begins-smartwatch-blood-pressure-tracking-study</ref>. | Smart Bands may be able to do it using Pulse Wave Velocity<ref>https://en.wikipedia.org/wiki/Pulse_wave_velocity</ref>, which measures the time between [[ECG]] pulse and [[Pulse oximetry]]. [[Fitbit]] recently started a study for customers that use a ''Fitbit Sense'' to evaluate whether this is feasible<ref>https://www.mobihealthnews.com/news/fitbit-begins-smartwatch-blood-pressure-tracking-study</ref>. |