Jeff Yan demonstrates his graphic pass code system on a PDA. (Credit: Newcastle University) Think it's tough coming up with memorable yet secure letter/number combo passwords? Wait until you have to think of something to draw. A new system devised by computer scientists at Newcastle University in the UK uses human-scribbled doodles in lieu of traditional passwords. Don't worry. One need not be the next Picasso for the graphic pass code system to work. The Background Draw-a-Secret (BDAS) system, developed by Jeff Yan, a computer science lecturer at the School of Computing Science at Newcastle University, and graduate student Paul Dunphy, lets people choose from a selection of base images. The image is then visually overlaid with a grid and users "trace" the image on a touch screen to the best of their ability. Their unique...
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