``How do you get the unit in front of the passenger that wishes to use it?``

How does Jet Blue do it? Have it there, snapped in if need be, or adapted in magazine pocket, at every seat before boarding...I`m sure they could figure out a solution.

``You must work out all the details and not look at only one advantage to determine if the arrangement is practical.``

It`s not my job to work out all the details. This is called conceptualizing a new model. If they can attach the digEsystem units, they can figure a way to do this if so desired.

It`s a chatroom and this is chat, not disection 101.