A Phone that Knows Where You're Going - Technology Review

Over-connected?...

"Beyond merely tracking where you've been and where you are, your smartphone might soon actually know where you are going—in part by recording what your friends do.
Researchers in the U.K. have come up with an algorithm that follows your own mobility patterns and adjusts for anomalies by factoring in the patterns of people in your social group (defined as people who are mutual contacts on each other's smartphones)."

A Phone that Knows Where You're Going - Technology Review