Accelerometer used to log smartphone keystrokes

Searching_ _ _ · Aug 21, 2011

Security researchers have demonstrated that it is possible to record keystrokes entered on a smartphone's on-screen keyboard using the device's built-in accelerometer. The researchers were able to correlate the acceleration measured when tapping individual number keys to the specific key pressed with an accuracy of more than 70 per cent. In contrast to the camera, microphone and GPS sensor, the accelerometer (some devices also contain a gyroscope) is not viewed as a security risk. Apps do not typically require special privileges to monitor a device's movements.
An app could register a service which analyses data from the accelerometer in the background and converts the movement data to individual keys. Under Android 3.x (Honeycomb) and iOS 4.2, web sites can also access accelerometer data without requiring user approval.
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Accelerometer used to log smartphone keystrokes - The H Online
Touchlogger: Inferring Keystrokes on Touch Screen from Smartphone Motion - Usenix stream

Hungry Man · Aug 21, 2011

I can't imagine this would work very accurately and it would also have to detect which phone the user had and then use the dimensions of the phone blah blah blah complicated too much work not a real threat.

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Accelerometer used to log smartphone keystrokes

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