Your use case could probably be solved fairly simply by a detachable screen that is attached on the seat in front of you. This is assuming you touch type. The

Your use case could probably be solved fairly simply by a detachable screen that is attached on the seat in front of you. This is assuming you touch type. The only thing that might be missing is a universal means to hang the screen without disturbing the folks sitting in front of you. Sounds like a kickstarter type project :-)