Steve, I agree...team is paramount. While we haven't announced ours formally yet, we have a very impressive team (combined foundes/advisors) which will be publicised soon.
I am of the same thought, being an investor myself, every great investment is a "3-legged stool" - market need, solution, and (paramount) a great execution team.
i will drink a bit of our own Koolaid and claim that our technology is NOT a contact lense or scanning the retina. We look at the responses of the iris and have found great correlation. This is also a far easier technology to implement as it is an IR camera and software analytics. The IP is about the software method! (but yes, I am drinking our Koolaid regularly so time will tell)