The METAL-D is a tag-style access credential equipped with the MIFARE® DESFire® communication protocol. With a robust metal and polycarbonate case, the METAL-D is ideal for attaching to lanyards or keyrings for greater convenience. The MIFARE® DESFire® protocol benefits from AES encryption, making it suitable for systems that require identities and personal details to be protected, such as high security access control.