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DSX compatible key card being presented to a wall-mounted proximity reader at a commercial office entrance

DSX D10202 33-Bit Format Guide: Compatible Cards & Fobs

This guide explains how the D10202 format is built, why the facility code matters so much on a DSX site, how to find the numbers you need, and how to reorder DSX compatible prox cards, key fobs, wristbands, and adhesive tags without duplicating credentials already in use.

by Ethan Bodak on October 21, 2026

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