Indala® 27-Bit (Proprietary) Compatible Cards & Fobs
Indala's extended structure: a 13-bit site code (0–8,191) and 14-bit card number (0–16,383) carried over the PSK-modulated Indala air interface — chosen by multi-site systems that needed more site codes than 26-bit offers.
Does American Key Cards make Indala 27-Bit (Proprietary) compatible cards?
Yes — American Key Cards supplies unbranded Indala 27-Bit (Proprietary) compatible cards and key fobs (AKC Indala 27-Bit Compatible Card), encoded to your facility code and card-number range and ready to use on your existing Indala readers. No hardware changes and no dealer account required.
- 125 kHz
- Frequency
- 125 kHz prox (PSK modulation — Indala air interface)
- Technology
- 1
- Bit format
- 2+
- OEM part nos.
- American Key Cards
- Order from
The 27-bit Indala layout rebalances the classic facility-code-plus-card-number split for organizations with many sites. Where 26-bit offers 255 facility codes, the 27-bit structure provides 8,192 — at the cost of a smaller per-site card space — which suited property managers and campuses running Indala readers across dozens of buildings under one numbering plan. Like all Indala-family credentials, it uses PSK modulation, a genuinely different air interface from most other 125 kHz systems: same frequency, different language, no cross-reading. Systems on this format are long-lived, and replacement credentials are ordered by continuing the existing site code and number sequence. We program unbranded, compatible-by-specification 27-bit cards to your exact values and verify the structure before shipment; if you're not certain whether your system runs 26-bit or 27-bit Indala, a photo of a working card and your reader model settles it before anything is produced.
Indala 27-Bit (Proprietary) specifications
- System brand
- HID Global (Indala line, originally Motorola)
- Technology
- 125 kHz Passive Proximity (PSK modulation — Indala air interface)
- Frequency
- 125 kHz
- Credential platform
- Indala-family 125 kHz PSK-modulated transponder programmed with the extended 27-bit data structure
- Bit formats
- 27-bit proprietary Indala — 13-bit facility/site code (0–8,191), 14-bit card number (0–16,383)
- OEM part numbers
- FPCRD (27-bit variant, ordered with 27-bit format code), FPISO (27-bit variant, ordered with 27-bit format code)
Specifications reviewed August 2026
Our compatible Indala 27-Bit (Proprietary) credentials
American Key Cards manufactures unbranded credentials engineered to work with your existing Indala readers — no hardware changes, encoded to your facility code and card-number range before they ship.
Full specifications, form factors and ordering FAQ: Specialty & legacy prox credentials
American Key Cards is an independent manufacturer of unbranded, compatible-by-specification credentials. We are not affiliated with, endorsed by, or sponsored by Indala, and we never supply OEM-branded product — for brand-original credentials, order from Indala or an authorized dealer. Brand names appear only to identify compatibility, and all trademarks remain the property of their respective owners.
Where Indala 27-Bit (Proprietary) is used
- Larger enterprise or campus deployments requiring more facility codes than 26-bit allows
- Legacy Indala installations configured with 27-bit site codes
- Multi-site property management with Indala readers across multiple buildings
Works with these readers
Related formats
You might also need
Indala FlexPass 26-Bit
The classic Indala credential: standard 26-bit facility-code-plus-card-number data delivered over Indala's PSK-modulated air interface — a different radio language from other 125 kHz systems, on millions of legacy doors.
View compatible cardsIndala ASP / FlexSecur
Indala's site-key-encrypted 125 kHz tier — a facility guide to why FlexSecur credentials are site-paired and un-reproducible, and where the open Indala formats we supply differ.
How it worksHID Prox H10301 (Standard 26-Bit)
The most widely deployed proximity format in North America: 26-bit Wiegand — an 8-bit facility code plus 16-bit card number — on the 125 kHz HID Prox platform, live on millions of doors.
View compatible cardsIndala 27-Bit (Proprietary) — FAQ
What's the difference between Indala 26-bit and Indala 27-bit?
The data layout. Both travel over the same PSK air interface, but 26-bit carries an 8-bit facility code with 16-bit card numbers, while 27-bit carries a 13-bit site code with 14-bit card numbers — more sites, fewer numbers per site. Your panel is configured for exactly one of them.
How do I know which one my system uses?
Your access-control software's credential settings state the format, and the printed numbering on existing cards usually gives it away — site codes above 255 mean 27-bit. If neither is conclusive, send photos of a working card and your reader model and we'll identify it before you order.
Are 26-bit and 27-bit Indala cards interchangeable on the same reader?
The reader reads both — it's the panel's format configuration that decides what gets accepted. A card in the wrong layout presents fine at the reader but is rejected upstream, which is why matching the configured format matters more than matching the reader brand.
What do you need from me to program a batch?
The site code, the card-number range, and confirmation the system runs the 27-bit layout. We verify all three against a sample card or your software's report before production so the batch enrolls cleanly.