Every Amiibo contains an NFC (Near Field Communication) chip inside its base. To prevent people from easily "spoofing" or faking these chips, Nintendo uses encryption.
Physical chips can fail over time. Digital backups ensure you never lose access to the in-game content you paid for. How the Process Works: From Bin to In-Game Rewards To use these files, you generally need three things: The Key Files: key-retail.bin (the decrypter). amiibo key-retail bin download
Amiibo Key-Retail Bin Download: The Complete Guide to NFC Backups Every Amiibo contains an NFC (Near Field Communication)
Be wary of .exe files. A real Amiibo key or character dump should always be a .bin file. If a site asks you to download an "installer" to get your keys, close the tab immediately to avoid malware. The Future of Amiibo: Emulators and "Power Tags" Digital backups ensure you never lose access to