Worried about your PIN Password Getting Stolen? Optical Illusion Can Help

A group of researchers led by Professor Nasir Memon has come up with a unique solution that can make PIN unlocking more secure. It’s all about spatial frequency — the smartphone’s display beams two distinct layers of lock screen — one with the normal PIN-pattern code and the other one with a false PIN layout. “The underlying technology blends one image of a keyboard configuration with high spatial frequency and a second, completely different, keyboard configuration with low spatial frequency,” said the NYU University Tandon School of Engineering professor.