Date Added: Nov 2011
The pervasiveness of mobile devices increases the risk of exposing sensitive information on the go. In this paper, the authors arise this concern by presenting an automatic attack against modern touch screen keyboards. They demonstrate the attack against the Apple iPhone - 2010's most popular touch screen device - although it can be adapted to other devices (e.g., Android) that employ similar key-magnifying keyboards. Their attack processes the stream of frames from a video camera (e.g., surveillance or portable camera) and recognizes keystrokes online, in a fraction of the time needed to perform the same task by direct observation or offline analysis of a recorded video, which can be unfeasible for large amount of data.