HID 37 Bit (H10302)

Everything you need to understand HID 37 Bit (H10302)

Card format Overview

A proprietary 37-bit card format used in access control systems, featuring a unique structure composed of 35-bit card number, and 2 parity bits (even and odd), allowing for easy management and avoiding card number duplication for secure, contactless access.

HID 37 Bit (H10302) format properties

Card Number

35 bits. A unique serial number (0-34,359,738,367) for each card within that facility code.

Even parity

Even Parity for Even parity over bits 1-18.

Odd parity

Odd Parity for Odd parity over bits 19-36.

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Format Value
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Decimal
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Binary
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