Ultralight EV1 RFID Chip Bank Card is based on 13.56mhz rfid  technology and the next generation of paper ticketing smart card for limited-use applications that offers solution developers and operators the maximum flexibility their ticketing shemes and additional security options . The Ultralight EV1 chip rfid card can backwards compatinle to Ultralight chip (old version and has off-production),it has 384 or 1024 bits user memory product variants and unique 7 bytes serial number .widely uses for event ticketing cards , loyalty , public transport card or hotel keycard .