A system and method is provided for billing transactions associated with an electric vehicle charging station (EVCS). A server may receive a station identifier associated with the EVCS from a computing device. The station identifier may be retrieved by decoding a code at the computing device. The code may include a graphic bit pattern that is configured to be decoded based on an optically captured representation of the code. The server may determine whether the EVCS is legitimate based on the station identifier. The server may provide a signal to the EVCS to initiate charging of a vehicle plugged into the EVCS in response to a determination that the EVCS is legitimate.