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Corporate 1000 compatible proximity card being scanned on a wall-mounted reader at a secure office entrance.

HID Corporate 1000 35-Bit Compatibility Guide: Cards, Fobs & Facility Codes

This guide explains how the Corporate 1000 35-bit format is structured, how it differs from the standard 26-bit format, why HID keeps it customer-specific, and how to order compatible cards and fobs that carry your facility code and card numbers correctly.

by Mike Boehm on August 24, 2026
Close-up of a 125 kHz HID proximity reader accepting a Corporate 1000 35-bit access credential at a door

Everything You Need to Know About the Corporate 1000 Format

What exactly is the Corporate 1000 format, why is it different from a standard prox card, and where can I get compatible credentials without going back to square one? This guide answers those questions in plain terms. Whether you are replacing lost badges or expanding a system that has been in place for years, the goal is to help you order the right credentials the first time.

by Mike Boehm on July 28, 2026

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