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Submission + - Security risk: iPad's glow as you enter password# (forbes.com)

nonprofiteer writes: Earlier this week, a South African security researcher released shoulderPad, an app that’s designed to auto-snoop on iPad users’ passwords by watching their touchscreen keyboards. When a user types on an iPad’s touchscreen, each key glows blue for a fraction of a second after it’s struck, a helpful bit of feedback for any virtual keyboard. ShoulderPad’s image recognition algorithms, based on Open CV’s open source image recognition software, look for that flash of blue. “At any distance, if the blue is distinguishable, shoulderPad can detect that keystroke,” says Meer.
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Security risk: iPad's glow as you enter password#

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