 In a video tolling system the license plate number can be extracted from an image either by using automatic number plate recognition (ANPR) technology or manual data-entry clerks.Video tolling is sometimes used in conjunction with "all electronic" open road tolling, to allow drivers without an RFID device (often referred to as a "Tag") to use the toll road.An all electronic system is a toll collection point that does not permit cash payment, and vehicle identification / toll collection is done using RFID or other electronic means.