32-B

Everything you need to understand 32-B

Card format Overview

A proprietary 32-bit card format used in access control systems, featuring a unique structure composed of 14-bit facility code and 16-bit card number, and 2 parity bits (even and odd), allowing for easy management and avoiding card number duplication for secure, contactless access.

32-B format properties

Facility Code

14 bits. The facility code range is 0 to 16,383.

Card Number

16 bits. A unique serial number (0-65,535) for each card within that facility code.

Even parity

Even Parity for Even parity over bits 1-16.

Odd parity

Odd Parity for Odd parity over bits 15-30.

Generate examples

Put in the values for this card format, we'll generate the results in a few different formats.

Here's your example

The API that turns phones into key fobs.