# HID Clock & Data - (H10320)

Everything you need to understand HID Clock & Data - (H10320)

## Card format Overview

A proprietary 36-bit card format used in access control systems,
featuring a unique structure composed of
32-bit card number, and 3 parity bits (even and odd),
allowing for easy management and avoiding card number duplication for secure, contactless access.

## HID Clock & Data - (H10320) format properties

### Card Number

32 bits. A unique serial number (0-4,294,967,295) for each card within that facility code.

### Even parity

Even Parity for Even parity over bits 2, 5, 8, 11, 14, 17, 20, 23, 26, 29, 32.

### Odd parity

Odd Parity for Odd parity over bits 1, 4, 7, 10, 13, 16, 19, 22, 25, 28, 31.

### Even parity

Even Parity for Even parity over bits 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33.

### Generate examples

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

### Card Number

Get examples

#### Here's your example

| Format | Value |
| --- | --- |
| Hex | 64D<br>Copy |
| Decimal | 1613<br>Copy |
| Binary | 000000000000000000000000011001001101<br>Copy |

## The API that turns phones into key fobs.