NEMA published NEMA EVSE 1.2-2015 EV Charging Network Interoperability Standard Part 2: A Contactless RFID Credential for Authentication (UR Interface). Standard describes protocol for authenticating electric vehicle charging service requests using contactless proximity radio frequency identification–type credentials. Authentication provides assurance to EV charging network that EV driver is the correct authorized party incurring a financial or other obligation for services to be rendered.