https://www.techradar.com/news/would-you-wear-an-apple-watch-with-an-inflatable-blood-pressure-monitor-band

Apple has been experimenting with upgrading the health tracking tech in its smartwatch for the last few years, and it seems one day the company may be able to monitor your blood pressure directly from your wrist.

A newly published patent shows an Apple Watch band that would be able to inflate, much like a blood pressure monitor cuff you'd find in hospital or at your doctor's surgery, and give you a way to track your vitals when on the go.