8byte iCLASS CSN 64bit

Everything you need to understand 8byte iCLASS CSN 64bit

Card format Overview

A proprietary 64-bit card format used in access control systems, featuring a unique structure composed of 64-bit card number, allowing for easy management and avoiding card number duplication for secure, contactless access.

8byte iCLASS CSN 64bit format properties

Card Number

64 bits. A unique serial number (0-18,446,744,073,709,551,615) for each card within that facility code.

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The API that turns phones into key fobs.