[Line Things & LIFF] How to register an existing bluetooth device to Line platform?

Hi guys,

I would like to connect and use an existing bluetooth device in LIFF. But I read the API document, it seems I only can get uuid of bluetooth device from Line platform. I can't upload my uuid of bluetooth device to Line. So I can't connect this device in LIFF. Is it correct?

But, I still want to know if it is possibile to connect an existing bluetooth device in LIFF. If anyone knows, please share with me.

Thanks a lot!