pivClass 75bit

Everything you need to understand pivClass 75bit

Card format Overview

A proprietary 75-bit card format used in access control systems, featuring a unique structure composed of 14-bit site code, 20-bit card number, 14-bit agency code, and 25-bit expiration date, and 2 parity bits (even and odd), allowing for easy management and avoiding card number duplication for secure, contactless access.

pivClass 75bit format properties

Site Code

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

Card Number

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

Agency Code

14 bits (Bits 2-15), range 0-16,383.

Expiration Date

25 bits (Bits 50-74), range 0-33,554,431.

Even parity

Even Parity for Even parity over bits 1-37.

Odd parity

Odd Parity for Odd parity over bits 38-74.

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Format Value
Hex
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Decimal
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Binary
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