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Access-card format insights

Plain-spoken deep dives into the proprietary proximity and smart-card formats most suppliers never document — what they are, which systems use them, and how a compatible credential is produced. Written for facility managers, integrators and anyone holding a card the original vendor won't reorder cheaply.

31 articles

Format deep dive

Avigilon Alta (Openpath) & 56-bit Cards Explained

Avigilon (Motorola) and Avigilon Alta / Openpath credentials decoded — the 56-bit Wiegand format and mobile-first platform — and how compatible Avigilon cards are supplied.

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Format deep dive

AWID Formats Explained: 26-bit, 34-bit & 50-bit RBH

AWID proximity formats decoded — the 26-bit, 34-bit and 50-bit RBH variants used in gate and building access — and how compatible AWID cards are encoded.

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ANZ enterprise

BQT, ISCS & Australian Wiegand Formats Explained

Australian proprietary Wiegand formats decoded — BQT 34-bit, BQT 38-bit with Issue Level and ISCS 38-bit — and how compatible cards are encoded to each.

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EU intercom

CAME / BPT TST01 Proximity Cards Explained (RF/64)

CAME / BPT TST01 proximity cards decoded — the RF/64 ASK Manchester format distinct from EM4100 — and how a compatible CAME TST01 card is produced.

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Hospitality

CISA CT6, Messerschmitt & Specialty Hotel Locks

A procurement guide to specialty hotel locks — CISA CT6 (AERO/SMART), Messerschmitt, Häfele Dialock and MIWA — and how compatible bulk key cards are supplied.

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EU intercom

Comelit, Videx & EU Intercom Fobs: Which Are Copyable

A plain guide to European intercom fobs — Comelit SimpleKey, Videx, Urmet and CAME — which are EM4100/MIFARE-UID copyable and which need a compatible blank.

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Enterprise

Cotag Cards Explained: The High-Value Passive Prox Format

Cotag credentials decoded — the unusual low-bitrate passive prox used by Bewator / Siemens / Vanderbilt — why OEM cards cost a fortune, and the compatible path.

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Buyer's guide

Discontinued & Obsolete Access Card Formats: How to Replace Them

When the OEM stops selling your card — Casi-Rusco, Motorola Flexpass, legacy Indala and more — here's how a compatible credential keeps an old access system running.

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Format deep dive

DMP 1326 & DMP Custom Prox Formats Explained

DMP proximity credentials decoded — the standard 1326 (26-bit) card and the proprietary DMP 31-bit / 33-bit custom formats — and how to get compatible DMP cards.

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Format deep dive

Gallagher / Cardax Cards Explained: Cardax IV & MIFARE Tiers

Gallagher (formerly Cardax) credentials decoded — the Cardax IV 125 kHz region-code format and the MIFARE/DESFire tiers — and how compatible Gallagher cards are supplied.

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Security tiers

HID iCLASS, iCLASS SE & Seos: What Can Be Replaced

An honest, tier-by-tier guide to HID iCLASS, iCLASS SE and Seos: which legacy cards have a compatible path, and why SE and Seos are supplied as blanks your system enrols.

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Identification

How to Read the Numbers on Your Access Card or Fob

How to read the part number, facility code and card number printed on your access card or fob — what each marking means and how to use it to order a compatible card.

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Residential

How to Replace a Lost Gate or HOA Fob

A step-by-step guide to replacing a lost gate or HOA fob — DoorKing, Linear, AWID and common 26-bit credentials — including what to send for a compatible copy.

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Format deep dive

Indala Format Numbers Explained: FlexSecur, 26/27/29-bit & Optus

Indala proximity formats decoded — FlexSecur scrambled facility codes, ASC 27-bit, 29-bit, Optus 34-bit and DSX 33-bit — and how compatible Indala cards are encoded.

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ANZ enterprise

Inner Range SIFER & Integriti / Concept Cards Explained

Inner Range credentials decoded — the SIFER DESFire EV3 secure card, the 56-bit LF format and Integriti / Concept prox — and the compatible path for each tier.

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EU enterprise

Jablotron RFID Cards & the Alarm-Access Crossover

Jablotron RFID cards decoded — the 64-bit BiPhase format used by Czech alarm-and-access systems — and how a compatible Jablotron card is produced.

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Format deep dive

Kantech ioProx Cards Explained: XSF, KSF & 32-bit Formats

What a Kantech ioProx card really is — XSF, KSF and 32-bit Sensor formats decoded — and how to get a compatible replacement that reads on your existing readers.

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Format deep dive

Kastle Systems Key Fobs & Cards: Why They're Hard to Replace

Why Kastle Systems fobs are so hard to replace through the building, what the 32-bit Kastle format is, and how a compatible Kastle credential is produced.

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Format deep dive

Keri Systems Cards Explained: K-format, MS / Megastar & NXT

Keri Systems credentials decoded — the proprietary K-format / MS (Megastar) prox and the newer NXT MIFARE line — plus how to get a compatible Keri card replacement.

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Security tiers

LEGIC Prime vs LEGIC Advant: What's Copyable

LEGIC Prime vs Advant decoded — the older obscurity-based 13.56 MHz format versus the modern AES generation — and which LEGIC cards have a compatible path.

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Format deep dive

Lenel Cards Explained: 26-bit, 37-bit & the Lenel 42-bit Format

Lenel / LenelS2 OnGuard credentials decoded — standard 26-bit, 37-bit and the proprietary Lenel 42-bit (L11601) format — and how to get compatible Lenel cards.

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Enterprise

Nedap Cards Explained: Magna, NeXS, TRANSIT & uPASS

Nedap AEOS credentials decoded — the 128-bit Magna/NeXS prox, TRANSIT long-range and uPASS UHF — and how compatible Nedap cards and tags are supplied.

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EU intercom

Noralsy Compatible Badges Explained (French Apartment Entry)

Noralsy apartment-entry badges decoded — the French residential RFID format, why buildings overcharge for spares, and how a compatible Noralsy badge is produced.

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UK/EU tokens

PAC & Stanley 8x32 Fobs Explained

PAC / Stanley fobs decoded — the 8-digit hex NRZ format used across UK access control (now Comelit-PAC) — and how a compatible PAC fob is produced.

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UK/EU tokens

Paxton Net2 & Switch2 Tokens Explained (Hitag2)

Paxton Net2 and Switch2 tokens decoded — the Hitag2 password-protected format used across UK access control — and the compatible path for Paxton fobs.

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Security tiers

SimonsVoss & Active-Transponder Locks: What Can't Be Copied

Why some credentials — like the SimonsVoss System 3060 active transponder — can't be reproduced as a passive card, and what the compatible options actually are.

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Format deep dive

Software House CCOTZ 37-bit Explained (C•CURE / iSTAR)

The Software House CCOTZ 37-bit credential decoded — the proprietary C•CURE / iSTAR format — and how a compatible CCOTZ card is encoded to your facility code.

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ANZ enterprise

Tecom & Challenger Smart Cards Explained (GE/Aritech ANZ)

Tecom / Challenger credentials decoded — the 27-bit prox and the Hitag-based smart card used in Australia/NZ — and which Tecom cards have a compatible path.

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EU intercom

Urmet 1125/50 Tokens & Intercom Fobs Explained

Urmet 1125/50 intercom tokens decoded — the Italian Sinthesi / 2Voice residential format — and how a compatible Urmet token or fob is produced for apartment entry.

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Format deep dive

Vicon VAX Proximity Cards Explained (and the Farpointe Link)

Vicon VAX proximity cards decoded — the Farpointe Pyramid credential underneath, the 26-bit default and MAXSecure — and how to get a compatible Vicon replacement.

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Buyer's guide

Why Your OEM Charges $10–$30 a Card (and Compatibles Cost a Fraction)

Why OEM access cards cost $10–$30 each, what a compatible credential actually costs to make, and how to cut your card spend without changing readers.

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