AcceleGlove can Spell American Sign Language Out on Screen

To most people, it's really a very hard work to learn and understand
sign languages, unless they can get some aid from the AcceleGlove.
Made by the Institute for Disabilities Research and Training (IDRT)
and funded by the National Science Foundation, the AcceleGlove is
built with some sensors inside, which can help to turn your finger
movements and other gestures into either text or speech. That means,
as somebody wears the AcceleGlove and makes some gestures, the text
displayed on the computer screen can then allow you to understand them
without difficulty.

http://www.acceleglove.com/products.asp