Why Noninvasive Blood Glucose Monitoring Is Still the Holy Grail of Wearables - Gizmodo
At the start of 2014, Google announced an initiative that, if successful, seemed destined to position Silicon Valley as a major force in the healthcare space. In a blog post, the company disclosed that it had begun developing a smart contact lens prototype that could measure glucose levels in tears via a miniaturized sensor nestled inside its layers.