An old colleague of mine and fellow IBM Fellow ('cept that he's the
full spec, crowned in glory variety rather than the pondscum variety I
was) Mike Cowlishaw had/has a non-trivial involvement in this stuff.
I'm pretty sure he told me about making hardware for it.

tim
--
Tim Rowledge, tim at sumeru.stanford.edu, http://sumeru.stanford.edu/tim
Useful Latin Phrases:- Mellita, domi adsum. = Honey, I'm home.