ICODE SLIX2 vs Tag-it HF-I Standard

Choose ICODE SLIX2 if you need advanced security features and slightly larger memory capacity. This chip provides 2528 bits (316 bytes) of usable user memory compared to Tag-it's 2048 bits (256 bytes), organized in 80 blocks of 4 bytes each. The SLIX2's standout feature is its 32-byte ECC-based originality signature using secp128r1, enabling cryptographic authentication to verify chip authenticity. It implements five-tier password protection (Read, Write, Privacy, Destroy, and EAS/AFI passwords at 32 bits each), privacy mode to hide contents until authenticated, and destroy mode for irreversible deactivation. Memory specifications include 50-year retention and 100,000 write cycles. Both chips comply with ISO/IEC 15693-2 and 15693-3 protocols at 13.56 MHz, but SLIX2's multi-level security architecture suits anti-counterfeiting, pharmaceutical tracking, and applications requiring tamper-evident features. Choose Tag-it HF-I Standard if you need basic inventory tracking with simpler security requirements and dual-standard compliance. This chip offers 2048 bits (256 bytes) arranged in 64 blocks of 32 bits (4 bytes) each, which is adequate for most item-level identification tasks. It complies with both ISO/IEC 15693 and ISO/IEC 18000-3 standards, providing broader compatibility with legacy infrastructure. Security is limited to individual block locking with two levels: user lock (reversible during initial programming) and factory lock (permanent write protection), applied per-block rather than via password authentication. The Tag-it lacks cryptographic signatures and password-based access control, making it unsuitable for high-security applications but perfectly functional for supply chain visibility, library management, and asset tracking where cost and standards compliance matter more than advanced anti-cloning measures. Both chips operate contactless at 13.56 MHz without batteries.