Ryan Williams, with the Utah Drivers License Division, displays his cellphone with the pilot version of the state's mobile ID on May 5 in West Valley City, Utah. The card that millions of people use to prove their identity to everyone from police officers to liquor store owners may soon be a thing of the past as a growing number of states develop digital driver's licenses. (Rick Bowmer | AP Photo) SALT LAKE CITY (AP) — The card that millions of people use to prove their identity to everyone from police officers to liquor store owners may soon be a thing of the past as a growing number of states develop digital driver’s licenses.