The link between amiibo bin files and Nintendo games is established through the use of NFC technology. When an amiibo is brought near a compatible Nintendo game, the game's software reads the data stored in the amiibo's bin file and uses it to unlock the corresponding in-game content. This seamless interaction between the amiibo and the game is made possible by the use of standardized NFC protocols, which allow the game to communicate with the amiibo's NFC chip.
Download the official app from their verified GitHub repository. amiibo bin files link