# Indala 34bit Optus

Everything you need to understand Indala 34bit Optus

## Card format Overview

A proprietary 34-bit card format used in access control systems, featuring a unique structure composed of 11-bit site code and 16-bit card number, allowing for easy management and avoiding card number duplication for secure, contactless access.

## Indala 34bit Optus format properties

### Site Code

11 bits. The facility code range is 0 to 2,047.

### Card Number

16 bits. A unique serial number (0-65,535) for each card within that facility code.

### Generate examples

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

#### Here's your example

| Format | Value |
| --- | --- |
| Hex | C800C8<br>Copy |
| Decimal | 13107400<br>Copy |
| Binary | 0000000000110010000000000011001000<br>Copy |

## The API that turns phones into key fobs.