HID 35bit Corporate 1000

Everything you need to understand HID 35bit Corporate 1000

Card format Overview

A proprietary 35-bit card format used in access control systems, featuring a unique structure composed of 12-bit site code and 20-bit card number, and 3 parity bits (even and odd), allowing for easy management and avoiding card number duplication for secure, contactless access.

HID 35bit Corporate 1000 format properties

Site Code

12 bits. The facility code range is 0 to 4,095.

Card Number

20 bits. A unique serial number (0-1,048,575) for each card within that facility code.

Even parity

Even Parity for Even parity over bits 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34.

Odd parity

Odd Parity for Odd parity over bits 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33.

Odd parity

Odd Parity for Odd parity over bits 0-33.

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Site Code

Card Number

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