We've already seen a number of systems designed to alert blind users to objects in their path, and most of those systems use cues such as audio tones or vibrations. A scientist at Germany's Karlsruhe Institute of Technology, however, has taken another approach. Florian Braun's "Proximity Hat" applies pressure to the wearer's head, in the direction of the obstacle.
Suppose you had a tablet that only displayed one line of text at a time. It would be pretty frustrating, but it's a limitation that blind users of braille-displaying devices are faced with constantly. Thanks to new technology being developed at the University of Michigan, however, full-page refreshable braille tablets could soon be on their way.
A mechanical hand utilizing DARPA-developed neural technologies has
become the first to allow a paralyzed patient to feel physical
sensations through a prosthesis. The 28 year-old test subject was able
to determine which mechanical finger was being touched whilst
blindfolded, with total accuracy.