More than one million electric vehicles are registered in the U.S.—and they all have to plug in somewhere.
As EV charging stations pop up across the country, one of the chief questions will be how charging station users are identified, authenticated, and connected with membership or payment systems. Radio-frequency identification cards and tokens and smartphone authentication apps have emerged as two viable options for EV charging authentication. Which is best? It may depend on the user base they plan to serve.
