EM4124 vs Higgs-4

Choose EM4124 if you need a cost-optimized UHF RFID solution for basic item-level tagging with minimal data requirements. This chip provides 176 bits of total NVM comprising a 96-bit EPC code and 32 bits of user memory (the PC word), plus 32-bit Kill and Access passwords in reserved memory. It includes a factory-locked 64-bit TID/UID for unique identification. The EM4124 complies with EPC Class-1 Gen2 and ISO 18000-6C standards, operating across the global UHF band (860–960 MHz). Security is limited to password-protected Kill and Access commands with an optional Deactivate function for muting the tag. This makes it suitable for applications like disposable packaging, basic supply chain tracking, or high-volume retail items where extended memory and advanced security are unnecessary. Choose Higgs-4 if you require greater memory capacity, enhanced security features, and advanced inventory management capabilities. The Higgs-4 offers 544 bits total memory: 128-bit EPC (versus 96-bit on EM4124), 128 bits of dedicated user memory (versus 32 bits), 64 bits for passwords, 96-bit TID, and a 64-bit UID, totaling 320 bits of customer-programmable space. It supports EPC Gen2 V1.2.0 and ISO 18000-6C protocols with the same 860–960 MHz frequency range. Security is significantly more robust with Dynamic Authentication anti-cloning fingerprint technology, BlockPermaLock for protecting individual 32-bit memory blocks, and BlockReadLock functionality beyond the standard 32-bit Access and Kill passwords. The Higgs-4 also features Fast-ID for rapid bulk reading in high-density environments. Select this chip for retail apparel, pharmaceuticals, sensitive inventory, or any application requiring brand protection, counterfeit prevention, or detailed product information storage beyond a simple EPC identifier.