Glucose Sensing Likely Too Challenging to Include in First-Generation iWatch

Apple’s iWatch has been rumored to include a glucose monitoring feature, but how that feature would be implemented is still unknown. One report from earlier this month indicated that a “Healthbook” app under development for iOS 8 will be able “to read glucose-related data,” while another report has warned not to expect glucose sensing built directly into the initial iWatch. The two reports are not necessarily conflicting given the possibility of Healthbook interfacing somehow with third-party glucose-monitoring devices, but a new report from Network World argues that the technology is indeed too early in its development to be incorporated into a mainstream consumer device such as the iWatch.

Heisler points to C8 Mediasensors and its non-invasive continuous glucose monitoring (CGM) device, the HG1-c, as an example of how this technology is still in its infancy. It’s a relevant example as Apple has hired several research scientists and engineers from the now defunct company and is presumably using their knowledge to explore bringing CGM to the iWatch.

The HG1-c device relied on Raman spectroscopy to indirectly measure a person’s blood glucose level. This technique shines light through the skin in order to excite blood glucose molecules and cause them to vibrate. An optic sensor then analyzes the amount of light reflected off these vibrating molecules and returns a reading that is used to calculate an approximate glucose level.

Though innovative, the technology has flaws that make it impractical for a wrist-worn device. The sensor unit was attached to a belt that was worn around the waist and required a large battery pack to operate. It also needed a gel to accurately measure light levels, which were influenced by ambient sunlight. This sunlight sensitivity was highlighted by former C8 employee Charles Martin, who spoke to Network World.

Yes, the camera sensor had to be shrouded in darkness to function. You have to understand that Raman Spectroscopy is looking for a very faint signal emitted by the glucose molecules. A rough analogy: try to pick out someone’s voice in a noisy room. The sunlight was this kind of noise that the camera sensor was not calibrated against. They did try to implement algorithms to discount measurements against sunlight anomalies, but some of the anomaly criteria these algorithms were supposed to detect, overlapped. This made things hard to verify and test on the device.

Apple likely can overcome many of these limitations, but it will take time to transform the technology to the point where it is reliable enough to be used as a diagnostic or monitoring device. Once Apple improves the technology, it will need to receive FDA approval, which is a painstaking process with extensive clinical trials and documentation.

If Apple goes down this route, it could take up to 18 months just to receive approval necessary to sell the device. Given this lengthy approval process and the fact that evidence of Apple earnestly assembling its iWatch biometric research team only started surfacing around early 2013, Heisler believes “the notion that this feature will appear in the first iteration of the device is highly improbable.”

Instead of measuring glucose levels, the iWatch may allow users to monitor glucose levels by importing them from a glucose monitoring device or by manually entering them into the accompanying Healthbook app for iOS. Apple is rumored to be working on the health and fitness app, which uses a card-based interface to track vital health statistics such as heart rate, weight and step count.

‘Social Network’ Director David Fincher in Talks to Helm Sony’s ‘Steve Jobs’ Biopic

Director David Fincher is in talks to direct the Aaron Sorkin-scripted Steve Jobs biopic based on Walter Isaacson’s biography, claims The Hollywood Reporter. Sorkin last month completed the script for the film, which is said to take place across three 30-minute scenes at three Jobs-led product launches.

Fincher has experience with broad-appeal Silicon Valley films after his Oscar-winning turn with the The Social Network — also written by Sorkin — which won three Academy Awards and was nominated for five more, including Best Picture and Best Director.

Like Zuckerberg, Jobs was a complicated visionary who became a polarizing figure. Under Jobs’ watch, Apple revolutionized several business, including personal computers, music, computer-generated animation and mobile phones. In the process, he became known as one of the greatest innovators of his generation. At the same time, he was unapologetic about his difficult personality, was at one point ousted at Apple and was criticized for the harsh treatment of workers in China who assembled Apple products.

Among Fincher’s other directing credits include Fight Club, Panic Room, the American version of The Girl With the Dragon Tattoo, and several others.

With Sorkin wrapping the screenplay, Sony’s next step will be to sign on a director and then move forward on casting, as no actors are known to be in talks for any roles. Apple co-founder Steve Wozniak is working as a consultant on the film, which has no potential release date yet.