HID iCLASS SR Compatible Cards & Fobs
HID iCLASS SR is a hardened intermediate between legacy iCLASS and the full SE platform, offering stronger read security without requiring SE readers or AES infrastructure.
Does American Key Cards make HID iCLASS SR compatible cards?
Yes — American Key Cards supplies non-OEM HID iCLASS SR compatible cards and key fobs (AKC HID iCLASS SR Compatible Card), encoded to your facility code and card-number range and ready to use on your existing HID readers. No hardware changes, no OEM dealer minimums, at a fraction of OEM pricing.
- 13.56 MHz
- Frequency
- 13.56 MHz Contactless Smart Card — Hardened Legacy (ISO 15693 / ISO 14443B)
- Technology
- 4
- Bit formats
- 5+
- OEM part nos.
- No
- Cloneable
iCLASS SR uses the same PicoPass silicon as legacy iCLASS but applies a secure-read enforcement profile that prevents credential extraction with standard tools that rely on the exposed default key. While SR does not include SIO or AES (features exclusive to iCLASS SE), it occupies a practical middle ground for sites with existing iCLASS readers that cannot yet support the full SE platform — American Key Cards supplies SR replacement cards for verified system owners and recommends SE or Seos for new deployments.
HID iCLASS SR specifications
- Brand / OEM
- HID Global / ASSA ABLOY
- Technology
- 13.56 MHz Contactless Smart Card — Hardened Legacy (ISO 15693 / ISO 14443B)
- Frequency
- 13.56 MHz
- Chip
- INSIDE Contactless PicoPass (same silicon family as iCLASS legacy, with SR application programming)
- Bit formats
- 26-bit Wiegand H10301, 37-bit H10302 / H10304, Corporate 1000 (35-bit), Any HID format — field programmable
- OEM part numbers
- 2100 (iCLASS SR Card, 2k/2), 2102 (iCLASS SR Card, 16k/2), 2103 (iCLASS SR Card, 16k/16), 2104 (iCLASS SR Card, 32k), 205x (SR Key Fob II variants)
Specifications reviewed June 2026
Our compatible HID iCLASS SR credentials
American Key Cards manufactures non-OEM credentials engineered to work with your existing HID readers — no hardware changes, encoded to your facility code and card-number range.
Full specifications, form factors and ordering FAQ: HID iCLASS credential stock
Can HID iCLASS SR cards be cloned?
No — HID iCLASS SR cannot be cloned from an existing card. It relies on strong cryptography, so a credential can't be copied off an existing card. That's a security strength, not a limitation of our service — and we'll never pretend otherwise.
iCLASS SR (Secure Read) is a hardened issuance of the legacy PicoPass chip that binds the reader configuration, diversified card keys, and credential data more tightly than standard iCLASS. SR discourages basic emulation attacks and raises the bar above standard-keyed legacy iCLASS. However, SR is NOT equivalent to iCLASS SE: it does not carry SIO credentials, does not use AES encryption, and still relies on the same DES-based PicoPass key derivation family. SR cards programmed with an Elite Key offer meaningfully higher protection, but the LOCLASS-style reader attack theoretically applies. In practice, SR provides a solid intermediate security level for organisations that cannot yet upgrade readers to the SE platform. Cloning an SR card requires the facility-specific authentication key — without it, standard cloning tools cannot extract credential data. AKC treats SR as a non-trivially-cloneable format and supplies replacement cards only to customers who can verify system ownership.
Where HID iCLASS SR is used
- Sites bridging legacy iCLASS readers toward SE migration
- Organisations requiring security above standard iCLASS without full reader replacement
- Healthcare and education facilities on mixed iCLASS reader fleets
- Government auxiliary buildings and perimeter access
Compatible readers
Related formats
You might also need
HID iCLASS (Legacy)
HID iCLASS (legacy) is the first-generation 13.56 MHz contactless smart card from HID Global, widely deployed from the early 2000s onward but now considered cryptographically outdated for high-security use.
View compatible cardsHID iCLASS SE
HID iCLASS SE is the second-generation 13.56 MHz smart card platform, introducing Secure Identity Objects (SIOs) and AES encryption to make credential cloning technically infeasible.
View compatible cardsHID Prox H10301 (Standard 26-Bit)
The HID H10301 26-bit format is the most widely deployed proximity card format in North America, used on millions of doors across commercial and residential buildings.
View compatible cardsHID iCLASS SR — FAQ
What is the difference between iCLASS and iCLASS SR?
Both use the same PicoPass chip family and operate at 13.56 MHz, but iCLASS SR adds secure-read enforcement that binds the reader, key configuration, and credential data more tightly. SR makes casual emulation and standard-tool duplication significantly harder than plain legacy iCLASS. It does not include SIO or AES encryption, which are exclusive to the SE platform.
Is iCLASS SR as secure as iCLASS SE?
No. iCLASS SR is more secure than standard-keyed legacy iCLASS but falls short of iCLASS SE. SE introduces AES encryption, Secure Identity Objects, and a Common Criteria EAL 5+ chip — none of which are present in SR. For high-security environments, SE or Seos is the correct choice.
Can you supply iCLASS SR replacement cards?
Yes. American Key Cards can supply SR-programmed cards for verified system owners. Because SR cards carry facility-specific keys, we require confirmation of system ownership during the order process. Contact us with your facility code and card number range.