I looked into the available devices and so far no decent hardware for a decent price is available without hacking.
All the best to you guys to bring this to the mainstream. The neurosky apps and headset are not my cup of tea.
This is completely foreign to me, it fails my bs test but to hear not just the words scientific, but quantifiable, piques my interest.
I'd love to hear a description about what you're trying to do there though.
I was on the fence on whether claimed effects of meditation were real, and reading this book clinched it for me. It anchored the claims I'd read elsewhere in something I actually believe - fMRI scans of brain activity.
Our startup is bringing those findings from the lab onto our mobile phone (check out www.brainbot.me for some info, although admittedly not much yet!) Right now we're busy prototyping and working on our first release.