ICODE SLIX2 vs ST25TV512

Choose ICODE SLIX2 if you need substantially larger memory capacity and block-level access control. With 2528 bits (316 bytes) of usable user memory across 80 blocks, it provides nearly five times the storage of the ST25TV512. This chip supports sophisticated security with five independent 32-bit passwords (Read, Write, Privacy, Destroy, EAS/AFI), enabling granular access control for different functions. The ECC-based originality signature using secp128r1 provides cryptographic authentication, while block-level write protection and page protection pointer allow fine-grained data locking. The privacy mode and destroy mode offer lifecycle management options. Both chips operate at 13.56 MHz and support ISO/IEC 15693 protocols with 50-year data retention and 100,000 write cycles, making SLIX2 suitable for applications requiring extensive data storage like supply chain tracking, item-level authentication, or multi-field data records. Choose ST25TV512 if you need a compact, cost-effective solution with advanced anti-counterfeiting features and optional tamper detection. The 512-bit (64-byte) EEPROM provides sufficient memory for basic identification and tracking applications. Its TruST25 digital signature enables product authentication, while the password encryption feature protects the two 32-bit passwords (which can operate as one 64-bit password) from being intercepted. The Kill mode permanently disables the tag, and Untraceable mode provides GDPR-compliant privacy by preventing inventory scanning. The optional tamper detect functionality enables physical security applications where detecting tag removal or manipulation is critical. As an NFC Forum Type 5 tag, it offers better smartphone compatibility for consumer-facing applications. This chip suits applications where memory requirements are modest but advanced privacy features, tamper evidence, or mobile interaction are priorities, such as pharmaceutical packaging, consumer product authentication, or access control credentials.