Just some ideas.
Even with not-powered USB-host, could it be possible to have some PS/2-EXT adapter and connect small touchpad to the device? You could have it attached to the back, and control it with forefingers.
Usually only thumbs are used pressing buttons and joystick, so forefingers just rest on the back of device.
I think it would be awesome, even better than touchscreen....
>>EDITED<<
Probably such adapter would be useful.
>>>EDITED<<<
Or you would be able to connect a keyboard?
Keyboard connected to computer, stealing power from RS-232
Even with not-powered USB-host, could it be possible to have some PS/2-EXT adapter and connect small touchpad to the device? You could have it attached to the back, and control it with forefingers.
Usually only thumbs are used pressing buttons and joystick, so forefingers just rest on the back of device.
I think it would be awesome, even better than touchscreen....
>>EDITED<<
Probably such adapter would be useful.
>>>EDITED<<<
Or you would be able to connect a keyboard?
Keyboard connected to computer, stealing power from RS-232