Introducing the amiibolink Bluetooth keychain – a compact and convenient device designed for seamless connectivity. This lightweight keychain uses smart sensing technology for fast and reliable performance. It features a simple one-button operation and supports Bluetooth connectivity for enhanced usability. Advantages: The device is easy to use with a single-button switch. Its smart sensing technology ensures responsive operation, and the compact design makes it portable and suitable for everyday use. Traditional Card Disadvantages: Standard cards can be inconvenient to carry, have limited storage capacity, and allow only one data set per card. These limitations are addressed with improved functionality. 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, creating a new card instance. 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 firmware package and use the app to complete the update.