[ACM Press the 3rd symposium - Pittsburg
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Kumar, Manu; Garfinkel, Tal; Boneh, Dan; Winograd, Terry
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Article
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2007
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ACM Press
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Shoulder-surfing -using direct observation techniques, such as looking over someone's shoulder, to get passwords, PINs and other sensitive personal information -is a problem that has been difficult to overcome. When a user enters information using a keyboard, mouse, touch screen or any traditional i