Accessing the accelerometer requires no permissions but can be used in a twisted way: by training machine learning algorithm, accelerometer data can be used to

Accessing the accelerometer requires no permissions but can be used in a twisted way: by training machine learning algorithm, accelerometer data can be used to infer keystrokes. The state of the art of this attack is this: http://www.research.att.com/~miluzzo/pubs/sys015fp-miluzzo-ABSTRACT.pdf http://www.research.att.com/~miluzzo/pubs/sys015fp-miluzzo-A... (to appear in MobiSys '12, full paper available to general public in June). A simpler attack can be found here: http://www.hotmobile.org/2012/papers/HotMobile12-final42.pdf http://www.hotmobile.org/2012/papers/HotMobile12-final42.pdf .