radarScientists at the University of Waterloo are working on a device that would use radar to determine blood glucose levels.

By analyzing how the electromagnetic waves sent by a radar transmitter bounce off of a glucose solution, the scientists were able to detect minute changes in the properties of solutions with different levels of glucose. Using artificial intelligence to develop algorithms that analyzed the signals, the team has identified more than 500 wave features. They are working to advance the technology with the goal of being able to analyze blood non-invasively.