Stefan Mileschin

If that guy in the coffee shop wearing Google Glass looks suspicious, it's because he's stealing your PIN number. Researchers at the University of Massachusetts Lowell found they could use video from wearables like Google Glass and the Samsung smartwatch to surreptitiously pick up four-digit PIN codes typed onto an iPad from almost 10 feet away—and from nearly 150 feet with a high-def camcorder. Their software, which used a custom-coded video recognition algorithm that tracks the shadows from finger taps, could spot the codes even when the video didn't capture any images on the target devices' displays.

http://www.hardocp.com/news/2014/06/...sscode_glance/