ESPN innovates in out-of-home audience measurement

ESPN, the sports broadcaster, has made significant progress in measuring the out-of-home viewing audience for its content.

Fans enjoy watching ESPN from the comfort of the couch, but many also seek out a fix of the latest sports news, opinion, and live action when they're at a bar, in the gym, or even sitting behind their desk at work.

Keeping up to date when they're on the...