Casi-Rusco 40bit

Everything you need to understand Casi-Rusco 40bit

Card format Overview

A proprietary 40-bit card format used in access control systems, featuring a unique structure composed of 38-bit card number, allowing for easy management and avoiding card number duplication for secure, contactless access.

Casi-Rusco 40bit format properties

Card Number

38 bits. A unique serial number (0-274,877,906,943) for each card within that facility code.

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The API that turns phones into key fobs.