Electronic Card Access and Elevator Lobby Call buttons. What is the current code regarding card readers at elevator lobby call buttons. i.e. Someone would have to present an access card, and have valid credentials in order to call the elevator in order to ENTER the elevator car. I know I can restrict access inside the car from floor to floor, but I'm pretty sure I can't restrict access to the exterior call buttons. I am in Georgia and the job is in Fulton County, City of Atlanta. Any input, and reference to code and section is appreciated.