Encryption Key ((link)) | Amiibo

so they are recognized as authentic by a Nintendo Switch or 3DS. Data Structures Read-Only Data:

This 80-byte key handles variable data, including the amiibo's nickname, owner information, and in-game progress or "leveling" stats. amiibo encryption key

When you write that data to a new blank tag, the software uses the keys and the new tag’s unique ID to "re-lock" the data correctly. Without the keys, the new tag would have the wrong "signature," and your Nintendo Switch would reject it as corrupted. Where Do You Get Them? so they are recognized as authentic by a

If I store game data on an amiibo, does that mean I can't ... - Nintendo Without the keys, the new tag would have

: Go to the app settings and select the option to "Import Keys." Navigate to where you saved the files on your device. PC (Emulators/Tools)

: Used for data that remains constant, like the character ID.

Because the master key (seed) is static across all Amiibo and the signature mechanism was reverse-engineered, it became possible to generate valid signatures for any NTAG215 chip, provided the lock bits had not yet been set.