There is a bit a kit that does what you say. I was at a CAA Human Factors seminar March 2001, and one of the guys there mentioned such a device being used for fixed wing maint somewhere. It was set up sp that they had the latest info all the time on the job.
Knowing the yanks, it's probably over there where they love all their gimmicks.
You could try emailing David Marx at
[email protected] as he might know who mentioned it (he was one of the seminar organisers). His company has a site
http://www.davidmarx.com/ mainly involved in maintenance errors in aviation if you need it.
Good luck.