How the compatible ProDataKey (PDK) Standard Fob / Red (125 kHz layer) works
The ProDataKey (PDK) Standard Fob / Red (125 kHz layer) is a 125 kHz low-frequency proximity credential — the band most legacy prox readers use. Its data structure is PDK Standard = 125 kHz HID-compatible 26-bit (H10301); PDK Red = DESFire EV2 8K secure + 125 kHz HID 26-37 bit prox on one card. When you present a credential, the reader decodes that exact structure and passes it to your access-control panel as a card number it recognises.
Because the ProDataKey (PDK) Standard Fob / Red (125 kHz layer) is a secured smart credential, it is designed so the encryption keys stay under your control. We supply compatible blank credentials built on the matching Genuine NXP MIFARE DESFire EV2 / T5577 platform, ready for your access-control system or integrator to enrol exactly as it would credentials ordered through the original vendor's channel. You get drop-in spares and bulk stock at a fraction of OEM pricing — and because your own system writes the keys, every credential inherits your site's security.
The ProDataKey format sits among the specialist proximity credentials most card vendors never tooled up to produce — which is why the only other source is usually the original manufacturer, at a steep premium. Supporting these hard-to-find formats is exactly what Security ID Systems specialises in. Tell us the format printed on your card, or send a sample for us to read, and we confirm compatibility before you order.
Also known as
ProDataKey · PDK · PDK Red · PDK Standard · PDK-CRED-CPX · B-BUC3 prox layer · PDK prox · PDK Standard Fob
ProDataKey and all other brand and product names are trademarks of their respective owners. Security ID Systems is an independent manufacturer and supplier of compatible access-control credentials and is not affiliated with, authorized by, sponsored by, or endorsed by these companies. Brand and format names are used only to identify the systems our products are compatible with. MIFARE and DESFire are registered trademarks of NXP B.V.