Indala FlexPass 26-Bit Card Replacement Guide
Indala FlexPass 26-bit proximity cards will work in any building equipped with Indala-brand readers — but they will not work in HID Prox readers, even though both technologies operate at 125 kHz. The reason is modulation: Indala uses PSK (Phase Shift Keying) encoding, which is architecturally distinct from the ASK/FSK encoding that HID Prox uses. American Key Cards manufactures a compatible Indala FlexPass 26-bit card and key fob, programmed to your facility code and card numbers, with no dealer account required.
What Is the Indala FlexPass Format?
Indala was originally developed by Motorola and later acquired by HID Global. The FlexPass line is a 125 kHz passive proximity credential that uses a proprietary 172-bit read-only RFID transponder encoded with PSK modulation. Despite being absorbed into the HID Global portfolio, Indala readers and cards remain a distinct ecosystem — Indala FP4511A and FP3521A readers cannot read HID ProxCards, and HID readers cannot read Indala cards.
The credential outputs standard 26-bit Wiegand data (H10301-compatible) to your access control panel once the reader decodes the PSK signal. This means your panel software and panel hardware see nothing unusual — the incompatibility lives entirely in the card-to-reader radio layer.
Technical Specifications
| Parameter | Indala FlexPass 26-Bit |
|---|---|
| Carrier frequency | 125 kHz |
| Air-interface modulation | PSK (Phase Shift Keying) |
| HID Prox compatible? | No — different modulation scheme |
| Wiegand output format | 26-bit H10301 |
| Facility code range | 1 – 255 |
| Card number range | 1 – 65,535 |
| Encryption | None (base card); FlexSecur adds encrypted layer |
| OEM card part numbers | FPCRD-SSSMW-0000, FPISO-SSSCNA-0000 |
| OEM brand | HID Global / Motorola Indala |
| AKC compatible card | AKC Indala FlexPass 26-Bit Compatible Card |
| AKC compatible fob | AKC Indala FlexPass 26-Bit Compatible Key Fob |
Why HID Cards Do Not Work in Indala Readers
The shared 125 kHz carrier frequency is a common source of confusion. HID is the dominant name in proximity cards, and the assumption that any 125 kHz card works in any 125 kHz reader is widespread — and wrong.
The carrier frequency is only the radio channel. What travels on that channel is determined by the chip’s encoding scheme. HID Prox uses ASK or FSK modulation. Indala FlexPass uses PSK — phase changes in the carrier signal carry the data. An HID reader listens for ASK/FSK transitions and receives nothing intelligible from an Indala card. The same applies in reverse: an Indala 603 FlexPass reader or 610 Mid-Range reader cannot decode an HID ProxCard. Frequency match is necessary but not sufficient.
How to Identify Indala Readers in Your Building
Indala readers sold under HID Global branding carry the model designations in the FP series. Common models include:
- HID Indala 603 FlexPass reader — standard single-gang or mullion mount, the most widely deployed Indala reader model
- HID Indala 610 Mid-Range reader — extended read-range version for wider doorways or mounting at distance
- HID Indala
FP4511A— mullion-mount proximity reader - HID Indala
FP3521A— surface-mount proximity reader
If the reader has an Indala logo or an FP-series model number printed on the housing or on a label on the back, you have an Indala system. Older units installed before the HID Global acquisition may bear the Motorola or Motorola Solutions logo alongside the Indala name.
Your original installer documentation or access control panel software records will also indicate which credential format the system was configured to accept. If you have existing working cards, you can typically see the facility code and card number printed on the card face or encoded in the system’s credential database.
Indala FlexPass 26-Bit vs. Indala FlexSecur
There are two distinct security tiers within the Indala 125 kHz ecosystem, and they are not interchangeable:
Standard Indala FlexPass 26-bit encodes a facility code (1–255) and card number (1–65,535) in 26-bit Wiegand format. The credential data is unencrypted. A card can be reproduced by anyone who knows the facility code and card number — this is true of all unencrypted 125 kHz proximity formats including HID Prox. American Key Cards manufactures compatible cards in this format, programmed to your specifications.
Indala ASP FlexSecur adds a site-specific encryption layer between card and reader. Without access to the site key, no third party — including American Key Cards — can produce functional FlexSecur credentials. If your system uses FlexSecur encryption, replacement cards must come from HID Global or an authorized dealer with access to your site key. This is an honest limitation, and we say so clearly.
If you are not sure which tier your system uses, the simplest test is whether new cards need to be “enrolled” at the panel alone (facility code and card number are sufficient) or whether the reader needs to “learn” the card through a cryptographic pairing process. The latter indicates FlexSecur.
OEM Part Numbers and Compatible Readers
The primary OEM card part numbers for Indala FlexPass 26-bit are FPCRD-SSSMW-0000 (clamshell form factor) and FPISO-SSSCNA-0000 (ISO-size printable card). These are HID Global part numbers for the post-acquisition Indala line. Pre-acquisition Motorola-branded cards carried the same format but different internal part tracking.
Compatible readers include the HID Indala 603 FlexPass reader, HID Indala 610 Mid-Range reader, FP4511A mullion reader, and FP3521A surface-mount reader, as well as some multi-technology readers from vendors such as IDTECK when placed in Indala compatibility mode. The Wiegand output from these readers to your access control panel follows standard 26-bit H10301 protocol, compatible with virtually every access panel on the market.
For buildings with a mix of Indala and other reader types, see our guide on the closely related Indala 27-bit format — a less common variant that extends the site code range but uses the same PSK modulation and requires the same reader hardware.
How to Order Indala-Compatible Cards
Ordering is straightforward once you have two pieces of information:
- Facility code — a number from 1 to 255 assigned to your site when the system was installed. It is typically printed on your existing cards (sometimes labeled “FC” or “Site Code”) or stored in your access control software.
- Card number range — the sequential range you need. If you are replacing specific lost cards, provide those individual numbers. If you are issuing new credentials, provide the starting number and quantity.
American Key Cards programs each card to your exact facility code and card number before shipping. Cards arrive ready to enroll in your system — the same enrollment process you use for any new credential. There is no minimum order quantity, no dealer registration requirement, and no OEM markup.
Our compatible Indala FlexPass 26-bit cards and fobs are produced to specification — compatible by specification with Indala reader infrastructure, not affiliated with HID Global or Motorola. They are drop-in functional replacements, not clones of existing credentials.
Why Compatible Cards Cost Less Than OEM
HID Global distributes Indala FlexPass credentials through an authorized dealer network with minimum order quantities that make small reorders impractical. A building needing six cards for turned-over tenants should not be forced to order fifty.
American Key Cards bypasses that distribution layer. We program credentials in-house to your specifications and ship direct — lower per-unit pricing, no minimum quantity, faster turnaround. Our guide on HID Prox H10301 standard 26-bit cards explains why that format — while visually similar — cannot substitute for Indala credentials in an Indala reader environment.
Ready to Order?
If you have Indala FlexPass readers and need compatible 26-bit cards or key fobs programmed to your facility code, contact American Key Cards with your facility code, card number range, quantity, and preferred form factor (clamshell card or key fob). We will confirm compatibility, provide pricing, and ship programmed credentials ready for enrollment.
Frequently asked questions
Why won't standard HID ProxCards work in my Indala reader?
HID Prox and Indala FlexPass both operate at 125 kHz, but they use completely different modulation schemes at the air-interface level. HID uses ASK/FSK encoding; Indala uses PSK (Phase Shift Keying). The reader cannot decode a card that speaks the wrong protocol, regardless of frequency. You need a card specifically programmed to the Indala FlexPass format.
What information do I need to order replacement Indala FlexPass 26-bit cards?
You need your facility code (a number from 1 to 255) and the card number or range you want programmed (1 to 65,535). Both are typically printed on your existing cards or recorded in your system installer's documentation. If your cards are unlabeled, a reader and appropriate software tool can extract them from a working credential.
Can Indala FlexPass 26-bit cards be cloned or duplicated?
Standard Indala FlexPass 26-bit cards without the optional FlexSecur encryption layer can be reproduced from their facility code and card number data. Our compatible cards are manufactured to the same specification — programmed to your exact facility and card numbers — and are not clones of existing credentials. The FlexSecur variant uses site-specific encryption between card and reader and cannot be duplicated by any third party.
Are Indala FlexPass cards still made now that HID Global owns the Indala brand?
Yes. HID Global acquired the Indala product line from Motorola and continues to produce FlexPass credentials and readers. The format remains widely deployed in legacy commercial buildings, and compatible aftermarket cards are available from American Key Cards without OEM minimum-order requirements.
