question: With the future full shift to cashless and contactless toll fee collection in the Philippines, installation of radio frequency identification (RFID) readers at toll plazas and tags on all vehicles is the most practicable solution. The Department of Transportation recently implemented this initiative to help minimize the transmission of COVID-19. RFID tags in the forms of stickers contains the motorist’s account number which if hacked can be used to access other important details about the owner. With the weak security of these tags, possible instances that information from RFID tags could be accessed. Information derived from these can be easily retrieved if the attacker has access to the tags' data. The worst thing is that public access to the database that contains essential information concerning the holder's account. In this paper, the authors aim to provide more information about tag ID’s encryption that is limited to RFID usage in the Philippine expressways. An algorithm devised by the authors well secures the information contained in the RFID tags.