UPDATED 7:21 AM EST, February 28, 2013
BARCELONA, Spain (AP) — Jimmy Buchheim is behaving oddly.
On the floor of the world's largest cellphone trade show in Barcelona, Spain, he's looking at the screen of his iPod Touch, taking a few steps, and then looking again. Now and then he backtracks or turns, and looks again. Slowly, he confines his movements to a smaller and smaller area. Then he drops to his knees, and checks the screen again. He scrabbles forward.
"There we are!" he says.
