my-d move (SLE 66R01P) vs NTAG210 / NTAG212

Choose the my-d move (SLE 66R01P) if you need enhanced password protection mechanisms with a retry counter to prevent brute-force attacks, or require a dedicated 16-bit value counter with anti-tearing protection for applications like loyalty cards or ticketing. With 128 bytes of user memory from 152 bytes total (38 blocks × 4 bytes), it offers flexible password modes (read/write or write-only protection) and 32-bit OTP functionality. The password retry counter specifically defends against unauthorized access attempts, making it suitable for applications where repeated authentication attempts pose a security risk. Both chips operate at 13.56 MHz and comply with ISO/IEC 14443-3 Type A and NFC Forum Type 2 Tag standards, so they're interchangeable from a protocol perspective. Choose the NTAG210 or NTAG212 if you need ECC-based cryptographic originality verification (secp128r1 signature) to authenticate tag genuineness, which neither relies on nor consumes user memory. The NTAG210 provides 48 bytes user memory (80 bytes total, 20 pages × 4 bytes) for compact applications, while NTAG212 matches the my-d move at 128 bytes user memory (164 bytes total, 41 pages × 4 bytes). Both variants include a 7-byte unique UID, 32-bit password protection with 16-bit password acknowledge (PACK) for authentication confirmation, and configurable limiting of authentication attempts. The originality signature enables supply chain authentication and anti-counterfeiting without requiring a live cryptographic challenge-response, making these tags ideal for brand protection, product authentication, or applications where verifying tag legitimacy is critical. The NTAG212 offers slightly more total memory (164 vs 152 bytes) than the my-d move.