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Apple again reported to be working on blood glucose monitoring for Apple Watch

Credit: Andrew O'Hara, AppleInsider

A new report claims that suppliers are developing a blood glucose monitor with Apple, using short-wavelength infrared sensors intended for the Apple Watch.

Apple has repeatedly been predicted to be adding a blood glucose monitoring system to Apple Watch, to the extent that it was at one point strongly, and erroneously, rumored to be in the Apple Watch Series 7. Now a new report repeats similar rumors, but also says that Apple is working with component suppliers on a particular technique.

According to Digitimes, companies Ennostar and Taiwan Asia Semiconductor (TAS, formerly Opto Tech) are working on components that will use short-wavelength infrared LED. The system would reportedly be used for several types of biosensing, including blood glucose.

Digitimes has a strong record for its industry sources, however it also has a far poorer one for the conclusions it draws from that information.

This report, however, does fit with one prior patent application from Apple, which describes a similar system.

Plus, Apple supplier Rockley Photonics has more recently demonstrated a prototype using infrared spectrophotometers. The prototype is intended for other health companies to use as a reference design, but images of it show the wrist device having an Apple Watch band.