Ideal tracker

Today’s prompt is to write about which device, application, program, etc. I wish helped to track my health. I really wish there were a blood glucose monitoring device that didn’t require poking/drawing blood. It would be like an oxygen saturation monitor, where I put my finger over a red light and it gives a (BG) reading. It would be small enough to easily carry around, and 100% accurate. In other words, it would be non-invasive, accurate, and portable. I could get a reading whenever I want, so  it would be just as effective as continuous glucose monitoring. Sounds good to me!