Is there a device, that works without a driver, you just connect it as usb, and receive any signal sent to it as if it were COM Port wired connection? For example, such a device that gets data sent to it by Wi-Fi network or Bluetooth and resends it to the USB. Of course it has to be set up once (network name, password etc) and for this purpose you need a driver, but once it is set up, you can use it at any computer without a driver.
I have a Bluetooth USB, but I think it can't work without a driver. By just connecting it to any computer you can't find it in device list on another bluetooth device (as phone, etc).