Yesterday, Google announced a smart contact lens designed for diabetics, to alert them to spikes and drops in glucose levels by using a tiny, wireless chip placed between two soft layers of lens material. The idea is that the chip takes readings almost every second, and uses a small LED display to alert the user when trouble might be imminent. LED lights could appear when levels reach problematic levels. The thought, of course, is that this product won’t just be used for diabetics – if Google can develop a heads up display in contact lenses, the need for a display on the upper right hand corner of a pair of glasses would be immediately obsolete, replaced with an even stealthier, deeply integrated visual display in lenses. This is all in the early stages, but the technology is on the way.