Introducing the amiibolink Bluetooth keychain – a convenient device designed for seamless connectivity and ease of use. This compact and lightweight keychain features smart sensing technology for fast and responsive performance. With simple one-button operation, it offers reliable functionality for everyday use. Advantages: The device is easy to operate with a single-button switch. Advanced sensing technology, combined with Bluetooth connectivity, ensures consistent performance. Its compact design makes it portable and user-friendly for a wide range of applications. Traditional Card Disadvantages: Compared to traditional cards, this device eliminates concerns about portability, limited storage, and durability. It supports multiple data configurations and does not require physical replacement for different uses. Mode Settings: To set the mode, open the app and navigate to profile -> settings -> mode settings. Random mode: Pressing the button generates new data based on the current bin file, simulating a new card. Sequential mode (file switching mode): Pressing the button cycles through stored bin files, with support for up to four offline files. Firmware upgrade mode: Press and hold the button until the green light stays on, entering firmware upgrade mode. Download the update package and use the app to complete the upgrade.