The mobile phone connects to the desktop through Bluetooth, and then uses the Internet sharing solution.

Today, I have an idea. Is it possible to connect a PC's bluetooth from the Bluetooth of a mobile phone, and the PC's Bluetooth will be shared with its own network adapter over the Internet, which will not save the cost of accessing the Internet on the mobile phone, and it is not slower than the SIM card of the mobile phone itself?

I thought this was because I had such an experience.
A desktop with dual NICs and a notebook with one Nic. By sharing the Internet with the dual network card of the desktop, you can enable both the laptop and the desktop to access the Internet at the same time.

My idea is that if I think of Bluetooth as the second virtual network card of a desktop machine with only one physical network card, my mobile phone can access the Internet through this Bluetooth shared desktop.

 

If you write a program to virtualize Bluetooth into a nic, I think this should be of commercial value. It may be whimsical, Maybe whimsical, and yet to be verified.

 

Of course, to put it wider, consider a serial port or USB port instead of a Bluetooth port.