The proximity cards are contactless credential and available with either MIFARE classic or MIFARE DESFire EV1 chip. They include an imbedded antenna and an integrated circuit, enabling contactless reading with the respective readers. The unique badge number is printed on top of the card enabling contactless reading by readers.The credit card sized card conforms to the ISO-standard size enabling surface printing with conventional ISO compatible card printers. This card is durable with IP 68 and can be fully submerged, all the electronics are sealed inside.