There is OpenAPS, the Open Artificial Pancreas. They are connecting commercially available insulin pumps and glucose monitors with open source software to auto

There is OpenAPS, the Open Artificial Pancreas. They are connecting commercially available insulin pumps and glucose monitors with open source software to auto regulate blood sugar in folks with diabetes. https://openaps.org https://openaps.org. There are also folks making implants, LED lights and rfid tags and such. https://en.m.wikipedia.org/wiki/Grindhouse_Wetware https://en.m.wikipedia.org/wiki/Grindhouse_Wetware