estimate your blood glucose level right now. Just cover your camera with a fingertip. Gluco -- mmol/L -- mg/dL -- Start Measurement Calibrate Reset Calibrate do not use for medical purposes.Gluco and related technologies described herein are subject to a pending patent application filed with the United Kingdom Intellectual Property Office (UKIPO). Patent Pending.As a general guideline, you can try using the normal blood glucose levels indicated below for reference only. remember, Gluco is just for blood glucose level awareness.