With the flick of a switch and a flash of green light, a network of veins springs to the fore, mapped out just below the surface of the skin. This is no medical lab -- it's a darkened suite inside San Francisco's designer Clift Hotel -- but I already see how the recent sting of a donation nurse thumping the inside of both elbows in search of a vein could, and should, be a nervy, time-consuming thing of the past.
The VeinViewer Flex isn't new. In fact, the first generation of VeinViewer debuted in 2006. But its use of infrared light to illuminate a hidden network within the body is seldom appreciated outside of medical circles.
Light, it turns out, and the projectors that channel it, can do quite a bit.… Read more