Access control: why switch to secure RFID cards

Improving access control security requires reviewing the whole chain: credential, reader, controller, software and permissions. A chip with security features can contribute when those functions are actually used by the installation.

Identify the current system’s limitations

Establish what the system checks. Does it read only a serial number, or authenticate the credential using keys? How are lost credentials revoked? Who can issue new access rights? These questions help identify useful improvements.

Radio frequency and equipment age alone do not determine security. Ask an access control specialist to review the exact references and configuration.

Use the chip’s security functions

NXP’s MIFARE DESFire EV3 documentation describes authentication, key management and encrypted communication. Their presence in the chip does not mean an existing installation already uses them.

The reader, software and application configuration must support the chosen functions. Using a card only for its identifier does not automatically provide all available cryptographic protection. Protecting keys and administrative access remains essential.

Prepare a staged migration

With the installer, define the target technology, reader changes, encoding requirements and key management procedure. Test credential issuance, permitted access, denied access and revocation on a representative installation.

Plan any coexistence with old credentials and a recovery procedure if difficulties arise. Do not order replacements only because they use a newer chip.

The catalogue’s white PVC RFID cards include DESFire EV3 options. Confirm the variant required by your project: buying a standard credential does not include system migration or activation.

Our RFID technology guide explains chip families, while the compatibility checklist helps prepare an order.