HID® DuoProx II (1336) Compatible Cards & Fobs
One badge, two systems: a printable ISO card carrying a 125 kHz proximity inlay for the doors and a HiCo magnetic stripe for whatever still swipes — the 1336-style workhorse of campus and club one-card programs.
Does American Key Cards make HID DuoProx II (1336) compatible cards?
Yes — American Key Cards supplies unbranded HID DuoProx II (1336) compatible cards and key fobs (AKC 1336-Style Compatible Prox + Magstripe Card — prox side programmed to your facility code and card range, HiCo stripe encoded to your track specification), encoded to your facility code and card-number range and ready to use on your existing HID readers. No hardware changes and no dealer account required.
- 125 kHz
- Frequency
- 125 kHz prox + HiCo Magnetic Stripe
- Technology
- 4
- Bit formats
- 3+
- OEM part nos.
- American Key Cards
- Order from
Plenty of facilities never fully retire the swipe. The dining hall, the time clock, the legacy library system, the gym check-in software — they all read a magnetic stripe long after the doors moved to proximity. The 1336-style card exists for exactly that split world: a standard printable ISO body with the 125 kHz proximity inlay for access control and a high-coercivity stripe for the swipe systems, so one badge serves both without anyone carrying two cards. We build the compatible version to the same two-function specification: the prox side programmed to your facility code and card-number range in your panel's format, the HiCo stripe encoded to your track layout, and the surface ready for your ID printer. Both functions verified before shipping.
HID DuoProx II (1336) specifications
- System brand
- HID Global / ASSA ABLOY
- Technology
- 125 kHz Passive Proximity + HiCo Magnetic Stripe
- Frequency
- 125 kHz
- Credential platform
- 125 kHz proximity inlay (HID Prox line) plus HiCo magnetic stripe in a printable ISO body
- Bit formats
- 26-bit H10301 (most common), 37-bit H10302, 37-bit H10304, Custom Wiegand formats
- OEM part numbers
- 1336, 1336LGGMN, 1536 (composite body)
Specifications reviewed August 2026
Our compatible HID DuoProx II (1336) credentials
American Key Cards manufactures unbranded credentials engineered to work with your existing HID readers — no hardware changes, encoded to your facility code and card-number range before they ship.
Full specifications, form factors and ordering FAQ: Standard 125 kHz proximity cards
American Key Cards is an independent manufacturer of unbranded, compatible-by-specification credentials. We are not affiliated with, endorsed by, or sponsored by HID, and we never supply OEM-branded product — for brand-original credentials, order from HID or an authorized dealer. Brand names appear only to identify compatibility, and all trademarks remain the property of their respective owners.
Where HID DuoProx II (1336) is used
- Campus one-card programs where doors read prox and dining or library systems still swipe a stripe
- Gyms and clubs with magstripe check-in software and prox-controlled doors
- Hospitals and offices bridging a legacy swipe system and a newer prox installation
- Photo-ID badge programs needing a printable dual-function card
Works with these readers
Related formats
You might also need
HID ISOProx II (1386)
The printable ISO-thickness proximity card — the 1386 style — that made one badge do two jobs: photo ID on the surface, 125 kHz access credential inside. The default body for corporate badge programs.
View compatible cardsHID ProxCard II (1326)
The classic thick clamshell proximity card — the 1326 style — durable, non-printable, slot-punched for a strap, and typically programmed in 26-bit H10301. The badge most people picture when they hear "prox card."
View compatible cardsHID 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 cardsHID DuoProx II (1336) — FAQ
What is a 1336-style DuoProx card?
A printable ISO-thickness card combining a 125 kHz proximity credential with a HiCo magnetic stripe. Facilities use it when door access runs on prox but other systems — dining, time-and-attendance, legacy check-in — still read a swipe.
Can these go through an ID card printer?
Yes, the body is standard printable ISO stock. If your workflow laminates or uses a retransfer printer, order the composite-body variant so the card tolerates the higher process temperature.
What do I need to provide to order?
Two specifications: the prox side's facility code, card-number range, and format (26-bit H10301 unless your panel runs another layout), and the magstripe encoding — which tracks, and the data layout your swipe systems expect. Your existing card vendor sheet or a sample card lets us confirm both.
Does the magnetic stripe interfere with the proximity antenna?
No — the stripe is passive magnetic media and the prox antenna is tuned around it by design. Swiping and presenting are independent functions on the same card and don't affect each other.