During his three-day bus tour to drum up re-election campaign support, President Barack Obama paused briefly to greet a group of people outside a pizzeria. But one man could barely tear himself away from his smartphone long enough to shake the Commander-in-Chief's hand.

As Obama makes his way down the line, the man is clearly engrossed in his smartphone. He even makes the President wait a moment before grasping his hand. And when Obama turns away, the man resumes without missing a beat. What could have been so important? A text? A tweet? Words with Friends?

[The Early Show]