Heard a talk about this on the radio during the commute this morning. Basically sensors around town to provide him with information as he is severely visually impaired. "Shops in 10 meters" ... "Doctors on your left" Also had an interface to his guide dog which allowed him to "hear" a sonar between him and the dog. He hadn't been to the area before and said he felt "very comfortable navigating the area". Gave him information on buses that were approaching and which number it was etc.
He was very excited about the technology and immediately noticed a difference when he didn't have it on again. The prototype considered a success is now being extended.
Great stuff Microsoft, truly awesome!
Awesome indeed, thanks for the link.