Introducing the amiibolink Bluetooth keychain – a convenient device designed for seamless connectivity and ease of use. This compact accessory supports quick data transmission and offers reliable performance. Advantages: The one-button operation makes this device simple to use. Advanced sensing technology, combined with Bluetooth connectivity, ensures consistent performance. Its compact and lightweight design makes it easy to carry and suitable for everyday use. Traditional Card Disadvantages: Standard cards can be inconvenient to carry, costly when purchased as a full set, and limited in storage capacity, typically holding only one data file per card. These limitations are addressed with amiibolink. 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 data instance. Sequential mode (file switching mode): Pressing the button cycles through stored bin files, allowing up to four bin files to be stored offline. Firmware upgrade mode: Press and hold the button until the green light stays solid, entering firmware upgrade mode. Download the update package and use the app to complete the upgrade.