In NJ and plenty of states there is a bar code on the back that the officer would take the license back to their vehicle and scan it. How will that happen unless the officer has a handheld device? Also wouldn't want anyone using a personal device to take a pic of my license, the data isn't secure.I don't believe the article is about handing over your phone or watch. An officer can take a picture of the ID to confirm at his or her vehicle.