Connect a USB keyboard via Bluetooth to a computer !

Funny idea that this girl to plug a USB keyboard on Bluetooth ?? A colleague uses her laptop, a MacBook, with a screen connected via wifi system Miracast. But he types on laptop and reflexively look at the laptop screen. Why do not you have a USB keyboard ? Impossible because he wants mobility laptop to go to meetings without having to unplug everything! I suggest you join me in the project : USB host connection keyboard and Bluetooth HID. I will describe two distinct parts. Jennifer