Apple's plan to bring blood-pressure tracking to the Apple Watch is still hitting snags, according to Bloomberg's Mark Gurman. Writing

Omron Evolv Wireless Blood Pressure Monitor ($70): The portable monitor provides precise clinical readings and features a built-in display that conveniently shows your results. Through Bluetooth connectivity, the Omron BPM effortlessly syncs with your Apple Watch via the Omron Connect mobile app.

First spotted by PatentlyApple, the patent is titled Blood pressure monitoring system including a liquid-filled sensor and points to one possible way in which Apple could crack the hallowed blood pressure sensing it has been trying to figure out for years.