The device sticks to your skin with an adhesive and has a longer shelf life, since it doesn't use chemicals. For diabetics who hate having to draw blood frequently -- type 1 diabetics have to prick their fingers up to six times a day, for instance -- this non-invasive monitor could be a godsend. However, it'll take at least five more years of testing before it becomes widely available. Thus far, it's been tested on at least 50 patients at the Swansea University College of Medicine, with more tests to follow this summer.