iCLASS Seos vs MIFARE DESFire EV1

Compare HID iCLASS Seos multi-tech credentials (13.56 MHz/125 kHz, 8 KB) with NXP MIFARE DESFire EV1 (13.56 MHz, AES-128) for access control applications.

Side-by-side specs

Frequency

iCLASS Seos: 13.56 MHz (Seos and iCLASS), 125 kHz (Prox)
MIFARE DESFire EV1: 13.56 MHz

Protocol

iCLASS Seos: ISO/IEC 14443-A (Seos), ISO 15693 (iCLASS), ISO 11784/11785 (Prox)
MIFARE DESFire EV1: ISO/IEC 14443-A (all 4 levels), ISO/IEC 14443-4, optional ISO/IEC 7816-4 commands

Memory

iCLASS Seos: 8 KBytes (Seos), 2k bit or 32k bit (iCLASS), 512 bits (Prox)
MIFARE DESFire EV1: 2 kB or 4 kB or 8 kB EEPROM (up to 28 applications, 32 files per application)

Interface

iCLASS Seos: RF (contactless)
MIFARE DESFire EV1: RF (contactless)

Temp Range

iCLASS Seos: -40°C to +70°C operating, -35°C to +50°C storage
MIFARE DESFire EV1: -25°C to +70°C (ambient)

Form Factor

iCLASS Seos: ISO/IEC 7810 card, 54mm x 85mm x 0.8mm, composite 60% PVC / 40% PET laminated
MIFARE DESFire EV1: FFC (8-inch wafer, 120 µm sawn), PLLMC/MOA4 (SOT500-2), PLLMC/MOA8 (SOT500-4)

Security

iCLASS Seos: Extended Privacy Support (Seos), Static UID optional (Seos), multiple logical records and data groups, HID Global SIO Data Object Support
MIFARE DESFire EV1: 3DES (56/112/168-bit keys), AES-128, mutual three-pass authentication, 8-byte CMAC, hardware exception sensors, Common Criteria EAL4+, optional Random ID, data encryption on RF…

Spec	iCLASS Seos	MIFARE DESFire EV1
Frequency	13.56 MHz (Seos and iCLASS), 125 kHz (Prox)	13.56 MHz
Protocol	ISO/IEC 14443-A (Seos), ISO 15693 (iCLASS), ISO 11784/11785 (Prox)	ISO/IEC 14443-A (all 4 levels), ISO/IEC 14443-4, optional ISO/IEC 7816-4 commands
Memory	8 KBytes (Seos), 2k bit or 32k bit (iCLASS), 512 bits (Prox)	2 kB or 4 kB or 8 kB EEPROM (up to 28 applications, 32 files per application)
Interface	RF (contactless)	RF (contactless)
Temp Range	-40°C to +70°C operating, -35°C to +50°C storage	-25°C to +70°C (ambient)
Form Factor	ISO/IEC 7810 card, 54mm x 85mm x 0.8mm, composite 60% PVC / 40% PET laminated	FFC (8-inch wafer, 120 µm sawn), PLLMC/MOA4 (SOT500-2), PLLMC/MOA8 (SOT500-4)
Security	Extended Privacy Support (Seos), Static UID optional (Seos), multiple logical records and data groups, HID Global SIO Data Object Support	3DES (56/112/168-bit keys), AES-128, mutual three-pass authentication, 8-byte CMAC, hardware exception sensors, Common Criteria EAL4+, optional Random ID, data encryption on RF…

Verdict

Choose iCLASS Seos if you require multi-technology credential support with backward compatibility to legacy systems. The Seos platform operates at 13.56 MHz for the secure identity object with 8 KB memory, while simultaneously supporting 13.56 MHz iCLASS (2 kbit or 32 kbit) and 125 kHz Prox (512 bits) protocols in a single credential. This makes it ideal for phased migration scenarios where you need to support ISO/IEC 14443-A, ISO 15693, and ISO 11784/11785 readers concurrently. The Extended Privacy Support and optional static UID in Seos mode provide flexible privacy configurations, and the HID Global SIO Data Object Support enables proprietary data structures for campus card or enterprise badge applications requiring multiple logical records across different access systems. Choose MIFARE DESFire EV1 if you need a standardized, high-security contactless solution with open cryptographic options and multi-application capability. Operating exclusively at 13.56 MHz with full ISO/IEC 14443-A Type A compliance and ISO/IEC 14443-4 support, DESFire EV1 offers 2 KB, 4 KB, or 8 KB EEPROM configurations supporting up to 28 independent applications with 32 files each. Security features include AES-128 and 3DES encryption (56/112/168-bit keys), mutual three-pass authentication, 8-byte CMAC, and Common Criteria EAL4+ certification. The optional Random ID prevents tracking, and hardware exception sensors protect against physical attacks. DESFire EV1 is preferred for transport ticketing, building access, and payment applications where ISO 7816-4 command compatibility, vendor-neutral cryptography, and internationally certified security are required without legacy low-frequency support.

FAQ

Can iCLASS Seos work with existing 125 kHz Prox readers?

Yes, iCLASS Seos credentials support 125 kHz Prox (ISO 11784/11785) with 512 bits of memory, enabling backward compatibility with legacy proximity readers while also providing 13.56 MHz Seos and iCLASS functionality in the same card.

What encryption does MIFARE DESFire EV1 support?

MIFARE DESFire EV1 supports AES-128 encryption and 3DES with 56-bit, 112-bit, or 168-bit keys. It features mutual three-pass authentication, 8-byte CMAC for message integrity, and has achieved Common Criteria EAL4+ security certification.

Which chip has larger memory capacity?

Both chips offer 8 KB maximum memory: iCLASS Seos provides 8 KB for the Seos secure identity object, while MIFARE DESFire EV1 offers 2 KB, 4 KB, or 8 KB EEPROM variants supporting up to 28 applications with 32 files per application.

Sourcing iCLASS Seos or MIFARE DESFire EV1 in volume?

Roxtron builds custom RFID and NFC products around both iCLASS Seos and MIFARE DESFire EV1. Tell us your project — quantities, form factor, timeline — and we'll come back within 24 hours with pricing and lead times.