MIFARE Classic 4K vs ICODE SLIX2

MIFARE Classic 4K vs ICODE SLIX2

Classic 4K and ICODE SLIX2 serve entirely different use cases. Classic 4K is a proximity card chip for access control and transit; SLIX2 is an ISO 15693ISO 15693Standard for vicinity-range smart cards, 1+ meter read rangeView full → vicinity tag for item- level logistics, library management, and pharmaceutical tracking.

Overview

MIFARE Classic 4K: ISO 14443ISO 14443Standard for contactless smart cards at 13.56 MHz (Types A and B)View full →-3A, 4,096 bytes, Crypto-1Crypto-1Broken proprietary cipher in MIFARE Classic (reverse-engineered 2008)View full → (broken), 0–10 cm read rangeread rangeMaximum communication distance between reader and tagView full →, designed for deliberate tap interactions.

ICODE SLIX2: ISO 15693 (NFC-V), 2,560 bits (320 bytes), 64-bit password, EAS function, privacy mode, up to 1 m read range with a standard reader. SLIX2 is the dominant chip in library RFID systems globally and in pharmaceutical item tracking.

Key Differences

• Standard: Different RF protocols — ISO 14443-A vs ISO 15693. Incompatible readers.
• Read range: Classic 4K: 0–10 cm. SLIX2: up to 1 m.
• Memory: Classic 4K: 4,096 bytes. SLIX2: 320 bytes.
• EAS: SLIX2 includes a hardware Electronic Article Surveillance function, enabling anti-theft detection without RF decoding.
• Use case: Classic 4K is a credentialing chip; SLIX2 is an item-tracking chip.

Technical Comparison

Verdict

No direct competition. Classic 4K belongs in card credential systems; SLIX2 belongs in item-tracking and library systems. Choose based on the required RF protocol, read range, and application architecture.