Ving Custom Printed RFID Hotel Key Cards RF Lock Cards are made of 13.56MHz rfid chip with printed plastic (PET or e-co friendly PVC ) material.They fully meet ISO 14443 rfid technology and contactless IC cards function.Credit Card ISO CR80 size and custom printed are available.Widely use for door control access ,identification ,cashless payment and hospitality industry management with optional magnetic strip ,barcode ,numbering or signature ,etc. they are compatiable with all major lock manufacturers,including Vingcard ,ADEL ,Onity ,Saflok,HUNE ,Kaba. IIco ,etc .