iCLASS Seos vs LEGIC MIM 256/1024

Choose iCLASS Seos if you need multi-technology credential support or compatibility with existing ISO-standard infrastructure. The Seos variant operates at 13.56 MHz using ISO/IEC 14443-A protocol with 8 KBytes memory, while the same credential can also support iCLASS (ISO 15693, 2 kbit or 32 kbit memory) and legacy Prox (125 kHz, ISO 11784/11785, 512 bits). This makes it ideal for migration scenarios where you need to support older 125 kHz proximity readers while deploying newer 13.56 MHz infrastructure. The Extended Privacy Support and optional Static UID features provide modern security capabilities, and the ability to store multiple logical records and data groups allows one card to serve multiple applications across different systems. The ISO standard protocols ensure broad interoperability with readers from various manufacturers. Choose LEGIC MIM 256/1024 if you require a proprietary ecosystem with tighter vendor control or need the specific security features of LEGIC's authorization concept. Operating at 13.56 MHz using the LEGIC prime protocol, it offers either 256 bytes or 1024 bytes of memory depending on the model. The encrypted data transmission, non-erasable and non-duplicable UID with licensee identification, and segment-level read/write protection provide robust security within LEGIC's closed architecture. The memory-in-memory structure allows multiple applications on a single chip with individually programmable protection per segment. However, you will be locked into LEGIC-compatible readers and infrastructure, with no fallback to 125 kHz or compatibility with ISO 14443 or ISO 15693 systems. This is appropriate when you want a controlled, proprietary solution rather than open-standard interoperability.