The YubiKey 5C NFC and its YubiKey 5 series siblings are ... On iPhones, you’ll hold the key near the top speaker; on Android phones, you slowly move the key across the back until your phone ...
Whatever the reason, if you're looking for hardware key alternatives to a YubiKey then we ... here is that there's no NFC or Bluetooth, so support for your Android or iOS device will be limited.