] As they walked along, Mike gave a shrug and a twitch just
] so. That was enough cue for his Epiphany wearable. Its
] overlay imaging shifted into classic manga/anime: the
] manzanita branches morphed into scaly tentacles. Now the
] houses that edged the canyon were heavily timbered, with
] pennants flying. High ahead was a castle, the home of
] Grand Duke Hwa Feen...

Free Vernor Vinge short story on wearable/ubiquitous computing.

Vernor Vinge: Synthetic Serendipity