VeinViewer Means No More Poking People Relentlessly to Locate Veins - Industry Tap. Thanks to Facebook friend, Ed Eccles, for this heads up on the latest wearable tech in hospitals. This ingenious strip locates veins by spotting hemoglobin, which lights up showing a track for the nurse to insert the needle. The strip uses near field infrared to spot the veins. Next we will have technology that spots other organs. I may insist on one of these the next time I am in the vicinity of a nurse with a needle.