The Glucose monitor technology is in conjunction with Medtronic, known for it's pacemakers. It works by implanting a small device the size of a penny under the skin that connects wirelessly to your iphone. From what I understand the present technology requires replacement of the under skin monitor every 14 days. That is way too short as healing of the surgical procedure will take longer. They need to get the system up to a year minimum for it to be acceptable. Jim Cramer recently had the CEO of a competing company on MAD MONEY who explained the Glucose monitor and it's state of the art a few weeks ago.
Samsung, has patents on wireless and rechargeable Pacemakers now for years. Medtronic has had the wireless pacemakers also for a long time. The wireless data collection using wifi is shut on or off by doctor choice. My doctor has it shut off because he wants to physically see his critical patients as there is more for him to monitor besides the pacemaker data. The wireless recharging and use of consumer wifi has not been approved by the FDA in the US due to a scare that it could be prone to hacking and that hackers could use it to assassinate from a distance over the internet. Samsung has the base patent but has not pursued it in a device due to this lack of FDA approval for the US. The current wireless technology in the US uses a very close proximity loop electromagnetic connection that has to be only a couple inches away to work. These monitors can be used with modems to transfer data to the doctor over a traditional phone line. They do not use the modem connection to reprogram the pacemaker, just to download the data it has collected. My father had this but when he moved in with me and since I didn't have the wired phone line, only cell phones here, we had to switch to visiting the doctor every 3-4 months.
The main holdup of these higher technology medical monitors is limited by the regulatory happy FDA. Tim Cook said it has no interest in being hamstrung by the FDA so these developing technologies will be continued by companies that have FDA experience and Apple engineers will only work with these companies like Medtronic for iphone and watch technology to control and display the data as an app. They were able to include the heart rate sensor in the watch as those do not require FDA testing trials and approval. And while an O2 sensor is well within the capability of the Apple watch heart rate sensor that exists, an O2 sensor application requires FDA trials and approval so that's why we don't have an O2 monitoring in the watch. I have no idea what the rule is for stuff that requires FDA and that which seems like it should and doesn't. It's Government logic which is often illogical.