CrypTag

NTAG424 DNA Toolkit — program tags and verify their Secure Dynamic Messaging (SDM) output.

Getting Started Examples SDK Reference API Reference

Encoder Program tags over a PC/SC reader: discover, authenticate (EV2 & LRP), read/write files, configure SDM profiles, and manage keys.

Decoder Verify the SDM URL a tag produces. No hardware required — works across all three SDM profiles (plain, encrypted, and full).