From the article: "Research into smartphone security has revealed that your
phone's sensors could help criminals unlock your stolen gadget.
And, given that these elements all come as standard on most smartphonemodels, and are not subject to the same controls as other phone functions, they
are a bigger security risk. The study was carried out by a visiting professor
at Swarthmore College,
who analyzed data captured from a smartphone's accelerometer--that's
the gadget that analyzes the direction your phone is tilting or moving and
turns the screen accordingly, and used for games like Doodle Jump--and
found it could be used to work out where someone tapped the screen." Read more