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Using Light in for PIN Entry Authentications
안두리(Andrea Bianchi),이안오클리(Ian Oakley),권동수(Dong Soo Kwon) 한국HCI학회 2012 한국HCI학회 학술대회 Vol.2012 No.1
Performing sensitive authentications, such as ATM PIN entry, in public spaces is a commonplace activity that is inherently susceptible to security attacks based on observation in person or via cameras. This paper addresses this problem with a system which allows users to enter PINs on their mobile devices and then transmit them securely for authentication using modulated patterns of light shown on the screen, sensed by a receiver unit and initiated by a physical action (placing the device facedown on the receiver). The advantages include the use of standard mobile devices and low cost sensing hardware. Furthermore, no pre-pairing is required as physical proximity guarantees security.