I heard on the radio that there is an increased number of people who walk and text that are getting in major accidents. One example that they quoted was falling down a manhole. I suppose walking into a parked car, tree or fence is also a possibility. I didn't here where (sorry) but police are beginning to use J-walking laws to give people tickets for walking while texting. Others are simply giving people tickets for "careless walking."
According to Ask Yahoo J-walking comes from a slang. In the early 1900's a "jay" was a person that was a hick, rube, or simpleton. A person that was not accustomed to walking around the new invention of "cars". A jaywalker was a newcomer to the city, green to the ways of those modern traffic signals that told folks when they could safely cross the road.
The new version of J-walker will be a person walking - anywhere with a cell phone in hand and typing ...from hick to over-tech.