Here's some info I posted in a thread about the movie tricorder:
Found this interview with the prop master on the new Trek movie, Russell Bobbitt. He essentially says he wasn't a fan-boy and therefore didn't feel locked into what "should be" in his props. Here's what he said about the movie tricorder:
"How large is the tricorder as compared to the original from TOS? It’s not as small as a TNG tricorder, is it?
Bobbitt: There were several items where we made great leaps in design choice. One is the Tricorder. I presented a TOS Tricorder to the actors and their reaction was that the size was too big with the amount of action there is in our film. So I immediately went to my ace-in-the-hole designer, Doug Brody, an adamant trekker who became our tech advisor. I gave him the task of designing a smaller version of the Tricorder, which would not be like any other, but would include all the elements needed to scan the environment appropriately."
He also talks about the movie communicator and phaser.