Comparison test results for the KnowU and UBand Bio-RFID non-invasive blood glucose monitors have shown a lot of promise for those eager to move away from the painful finger-sticking solution for checking blood sugar levels. The company behind the KnowU and UBand monitors is targeting a cost usage estimate of less than US$1,000 per year.
https://www.notebookcheck.net/KnowU-and-UBand-Bio-RFID-non-invasive-blood-glucose-monitors-target-painful-finger-sticking-eradication-as-comparison-tests-show-promise.584528.0.html