A very impressive video made the rounds last year for the Cicret device; sine then, a prototype video has surfaced.
(Cicret bracelet video)
At present, Cicret is trying to raise funds for development; it's not clear whether or not this product will ever exist.
I was sure I had read the basic idea some years ago; sure enough, I found it in the works of John Varley, a 1992 novel Steel Beach:
By pressing the dots in different combinations with my fingertips I was able to write the story in shorthand, and watch the loops and lines scrawl themselves on a strip of readout skin on my wrist...
(Learn more about readout skin)
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Humanoid Robots Building Humanoid Robots
''Pardon me, Struthers,' he broke in suddenly... 'haven't you a section of the factory where only robot labor is employed?''
Stratospheric Solar Geoengineering From Harvard
'Pina2bo would have to operate full blast for many years to put as much SO2 into the stratosphere as its namesake had done in a few minutes.'