Are there ways to check blood sugar without pricking your finger?
The sensors used in continuous glucose monitoring systems typically stay in place for a week, states the National Institute of Diabetes and Digestive and Kidney Diseases. These sensors monitor glucose levels in tissue fluid and send the results to a wireless monitor. Although it is a more expensive option, continuous blood glucose monitoring often allows patients improved blood glucose control.
Sources: webmd.com, niddk.nih.gov