Agreed. If it's one's personal tool and it's useful to the owner that's fine. But if we're talking about locking it up in a case, wouldn't a laptop be infinitely more practical at only slightly more cost?
If you're determined to lock the iPod Touch to something, here's a
possible solution, similar to retail display "loss prevention" devices.
Back to your topic: The Wybron color app was discussed on another thread. Personally, I see limited need for that, as I know what eighty Lux and seventy Lee colors look like, and don't intend to learn any more. And one can't shine a light source through an iPhone.
Rumor has it, support for iPhone remote MAY be included in grandMA2, in which case I imagine I'll be buying an iPhone/iPod Touch. One of our members currently uses his PDA-cellphone as a remote for the grandMA, but he hasn't yet shown me the magic.