ICODE SLI vs ST25TV512

Choose ICODE SLI if you need larger user memory capacity and prioritize inventory or library management applications. With 112 bytes of user memory (28 blocks × 4 bytes), it offers 75% more writable storage than the ST25TV512. The chip supports ISO/IEC 15693-2 and 15693-3 protocols at 13.56 MHz and includes a unique 64-bit UID for item identification. Its security features are straightforward: block-level write protection through permanent locking, an EAS bit for retail anti-theft systems, AFI for application filtering, and DSFID for data format identification. This makes it suitable for item-level tagging in retail, library book tracking, and supply chain applications where larger data storage is required but advanced cryptographic security is not essential. Choose ST25TV512 if you require advanced security features including password protection and cryptographic authentication, even though it provides only 64 bytes of user memory. The ST25TV512 supports both ISO/IEC 15693 and NFC Forum Type 5 protocols at 13.56 MHz, offering broader compatibility with NFC-enabled smartphones. It implements dual 32-bit passwords (configurable as one 64-bit password), TruST25 digital signature for authentication, password encryption, and optional tamper detection. The chip includes privacy-focused features like Kill mode (permanent deactivation) and Untraceable mode for GDPR compliance scenarios, plus EAS functionality. Despite having 43% less user memory than ICODE SLI, this chip is better suited for authentication-critical applications such as brand protection, secure access control, pharmaceutical tracking, or any deployment requiring cryptographic verification and enhanced privacy controls.