Researchers have developed a small non-invasive device by combining radar and artificial intelligence (AI) technologies that would help people with diabetes to monitor their blood sugar levels without the need for painful finger pricks several times a day. We want to sense blood inside the body without actually having to sample any fluid said lead author George Shaker professor at the University of Waterloo in Canada. The system can detect changes in sugar levels using a small radar device which sends high-frequency radio waves into liquids containing various levels of glucose and receive radio waves that are reflected back to it.