Mobile systems are provided for charging electronic toll collection accounts for parking fees. The systems are configured to wirelessly request and receive tag data from an electronic toll device. Some embodiments include a vehicle and a boom, some embodiments include a handheld device, and other embodiments include combinations thereof. Methods of charging an electronic toll payment system are also provided. A mobile scan system wirelessly requests and receives tag data from an electronic toll device on a customer's vehicle which is checked for validity, and then an electronic toll collection account is charged a fee for parking.