Because unfixed-info.bin contains proprietary cryptographic data owned by Nintendo, it falls into a legal gray area.
Because the UID is unique to every single physical tag, the cryptographic signature changes for every Amiibo—even if they represent the exact same character. Software tools use unfixed-info.bin to decipher how the unique hardware UID interacts with the standard character data. Common Use Cases and Applications unfixed-info.bin
To understand its role, you have to look at how Nintendo protects its data: Amiibos use these specific NFC chips. Encrypted Data: The data on these chips is locked. Because unfixed-info