Apple makes major progress on no-prick blood glucose tracking for its Watch

The Apple Watch has gradually become more of a health tool. The first model, launched in 2015, included a heart-rate sensor but was more focused on fitness tracking. The device gained the ability to take electrocardiograms, or ECGs, from the wrist in 2018. — Apple

Apple Inc has a moonshot-style project underway that dates back to the Steve Jobs era: noninvasive and continuous blood glucose monitoring.

The goal of this secret endeavour – dubbed E5 – is to measure how much glucose is in someone’s body without needing to prick the skin for blood. After hitting major milestones recently, the company now believes it could eventually bring glucose monitoring to market, according to people familiar with the effort.