Phone used as USB keyboard

[remijenkins]

I have the Apache and I would like to use it has a USB keyboard. Is there a way to do this. The reason being, I fix POS terminals in the town I live in and I get calls and have to go straight there, even when I was out and about and I don't want to have to keep a keyboard in the vehicle or run home and grab one. These terminals don't have keyboards or PS/2 ports. Only USB and since I know you can use the phone as a Bluetooth keyboard (seen it done) then why not a USB keyboard.