Introducing the amiibolink Bluetooth keychain – a convenient device designed for seamless connectivity and ease of use. This compact and lightweight accessory offers reliable performance with simple operation via a one-button switch. Equipped with smart sensing technology, it delivers fast and responsive functionality. Advantages: The intuitive design allows for effortless use. Bluetooth connectivity ensures stable performance, while the durable construction supports long-term reliability. Its portable size makes it suitable for everyday carry. Traditional Card Disadvantages: Standard cards can be inconvenient to carry, require significant storage space, and typically hold only one data file at a time. Additionally, physical cards may have limitations in usage frequency. The amiibolink provides a streamlined alternative. Mode Settings: To adjust mode settings, 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 different card each time. Sequential mode (file switching mode): Each button press cycles to the next bin file, with support for up to four bin files stored offline. Firmware upgrade mode: Press and hold the button until the green light remains solid, entering firmware update mode. Download the update package and use the app to complete the upgrade process.