Apple would set up a non-invasive blood sugar sensor on its Watch Series 7. Apple has reportedly developed an optical sensor to measure the user's blood sugar level without having to pierce their skin, says Korean site ETNews. This very complex project, would have been implemented several years ago in Cupertino.
Tim Cook, who was reportedly spotted testing a prototype on Apple's campus in 2017, had previously spoken in favor of such a sensor: “It’s mentally anguishing to stick yourself many times a day to check your blood sugar,” he said. “There is lots of hope out there that if someone has constant knowledge of what they’re eating, they can instantly know what causes the response... and that they can adjust well before they become diabetic.”
Such a novelty is often referred to as the "holy grail" for people with diabetes and this sensor, if proven reliable, would be a huge selling point on its own. This is the first rumor about the technical novelties of the Apple Watch Series 7, the presentation of which is expected for next September.