A recent Kairosnews post covered technology for typing with your eyes. Now here's talking with your hands. From CNN.com:

"An Australian scientist is developing a set of gloves capable of translating sign language, a move he hopes could ease communication for deaf and mute people."

Readers interested in cyborg technologies might also want to look at Vision Quest, a feature about research with artificial eyes in the September 2002 print edition of Wired. Some interesting advances with this project.