[Chad C. Mulligan]

Industrial process control engineers (I were one) talk about "granularity". The more frequently you measure the output, the better you can control the process, be it papermaking or machining engine blocks. I'd love to put an end to fingersticks, (I do 5 or 6 a day) but so far this is NOT a mature technology. (I've been watching it closely.) Correlation to the fingerstick sensors is poor. Give it time....but I'm not going to rush out and buy one.

[Honest Nigerian]

You guys don’t know what you are talking about. The CGM technology is very good, and it can “talk” to insulin pump. We are experiencing a robot pancreas replacement device.
Not perfect, but i remember the first heart transplants, etc.

[Red Badger]

Have you seen this?

https://www.medica-tradefair.com/en/News/Interviews/Previous_Interviews/Interviews_2019/Blood_Sugar_Monitoring_Using_Infrared_Instead_of_Invasive_Techniques