ICODE DNA vs ST25TV02K

Choose ICODE DNA if you require strong cryptographic security for anti-counterfeiting, brand protection, or high-value item authentication. This chip provides AES-128 mutual authentication with three independent user keys, a 32-byte ECC-based originality signature for manufacturer verification, and a unique 64-bit UID. With 2016 bits (252 bytes) of usable memory across 63 blocks, it supports memory segmentation with granular access privileges and per-block write locks. The integrated 16-bit counter (occupying the 64th block) enables usage tracking or anti-cloning applications. Both chips operate at 13.56 MHz and follow ISO/IEC 15693 protocols, but ICODE DNA's cryptographic capabilities make it suitable for pharmaceutical tracking, luxury goods authentication, and secure supply chain applications where clone resistance is critical. Choose ST25TV02K if you need basic security with energy harvesting capability for battery-free sensor applications or cost-sensitive deployments. This chip offers 256 bytes (2048 bits) of EEPROM across 64 blocks with 32-bit password protection and per-block lock bits, sufficient for standard access control and item-level tagging. The ST25TV02K adds NFC Forum Type 5 compliance and ISO/IEC 18000-3 mode 1 support, ensuring broad reader compatibility. Its key differentiator is the energy harvesting output pin, which allows powering of external sensors or microcontrollers from the RF field without batteries. This makes it ideal for temperature loggers, smart labels, or IoT sensor nodes where power scavenging is required. The AFI byte enables application-level filtering. While security is limited to password protection rather than cryptographic authentication, the ST25TV02K suits logistics, inventory management, and basic authentication scenarios where the energy harvesting feature provides system-level value.