The monitoring patch as compared to a 25-cent coin for scale. Credit: University of Waterloo Researchers at two Ontario universities have developed a pain-free, wearable sensor that can continuously monitor levels of blood sugar, lactates and other critical health indicators for weeks at a time, sending results to a smartphone or other device. The Wearable Aptalyzer, created by a team featuring researchers from McMaster University and the University of Waterloo, uses an array of tiny hydrogel needles that penetrate just deeply enough to reach the interstitial fluid beneath the skin, Read More