How the compatible FDX-B (ISO 11784/11785 animal/livestock ID) works
The FDX-B (ISO 11784/11785 animal/livestock ID) is a 125 kHz low-frequency proximity credential — the band most legacy prox readers use. Its data structure is FDX-B biphase 128-bit - country code + 38-bit national ID + flags + CRC (ISO 11784/11785). 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.
As a programmable blank, the FDX-B (ISO 11784/11785 animal/livestock ID) is the raw material the rest of the catalogue is built on. We supply it factory-fresh and rewritable on the T5577 / EM4305 platform, so you — or we — can encode it to emulate the proximity format your readers expect. It is the backbone of every 125 kHz compatible credential we ship.
To order, tell us the part number or format printed on your existing Open ISO standard card, along with your facility code and card-number range, and our specialists confirm the encoding before anything ships. Bulk and reorder quantities are welcome — pricing is a fraction of OEM list, and every credential is verified to read on your existing equipment.
Also known as
FDX-B · FDXB · ISO 11784 · ISO 11785 · pet microchip · animal ID · HDX
Open ISO standard 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.