Phones lead to thousands of head and neck injuries each year

A sign outside a German school warns drivers to look out for so-called 'smombies'. Injuries linked to smartphone use have risen sharply in recent years, according to a new study. — dpa

The warnings against driving while using a mobile phone have been around nearly as long as the devices themselves. But since phones morphed into "smart" handheld computers a decade ago, the driver's seat is not the only place they have led to injury.

Hey, you! Walking down the sidewalk, texting your buddy, liking that Instagram dog photo, watching a Star Wars trailer. Researchers at Rutgers New Jersey Medical School have crunched the numbers, and it seems you need to watch where you're going.