Application guide

RFID cards and key fobs for access control

For an existing access system, start with its approved credential specification. Match the exact IC, data format and reader configuration, then choose a Roxtron card or fob. For a new system, agree the security and issuing workflow with the system integrator first.

Build the application specification

Project decisionWhat to defineWhat the sample must demonstrate
Replace a credentialRecord reader model and firmware, existing IC, identifier display and application data.An enrolled sample opens the intended access point and follows the expected revocation behavior.
Change the physical formatKeep the approved electronic configuration while comparing card and fob construction.The finished credential works in its normal carrying position, including near keys or other cards.
Migrate to a different ICAgree reader support, personalization, keys and rollout with the integrator.Both authorized and rejected transactions behave correctly across the actual reader fleet.

Product configurations to discuss

These are catalog options for a specification discussion. Confirm suitability with your system provider and qualify the chosen product before production.

EM4200 RFID ISO card

A CR80 identification card measuring 85.60 × 53.98 mm, available with LF, HF and UHF chip options. Combine chip selection with printed artwork, serialization, magnetic stripe and other personalization options for access, membership and integrated business systems.

MIFARE DESFire EV3 4K RXK04 key fob

An ABS key fob measuring 40 × 33 × 4 mm and weighing 6 g. Choose the IC, enclosure color and personalization for access, membership or identification systems. Silkscreen printing, laser engraving and printed numbering options support a consistent credential program.

Questions before ordering

Does reading the UID prove the credential is compatible?

No. The application may require authenticated data, a particular file or sector layout, or a specific identifier representation. Test the complete enrollment and access transaction.

Can I send production keys with a quotation request?

Use nonproduction sample data for the initial enquiry. Agree a separate secure provisioning and transfer process with the responsible system owner before sharing any production credentials.