I’ve had an idea!
Imagine setting up something like a bluetooth headset, except it’s an armband (or whatever) and taps out Morse code, instead.
Your phone can keep a cue of the latest tweets, convert them to Morse code, and then tell the device to tap out each onto whatever body surface you attach it to.
There’s a hitch, of course: few people know Morse code. Still, goes to show that it’s still a feasible communication medium, even today!
Imagine sitting there, staring into space. Your friend asks, “Were you even listening to me?” And you’ll say, “Oh, sorry, no. I was reading my tweets.”
I’m sure some sort of device with a belt could be loosely attached to the finger, and with a signal could run the belt around and cause bumps to appear in certain places, which might give the illusion of reading braille. I’m not sure if that might be faster/more pleasant, as I’m sure more people read braille.
I’m sure there are electronic braille devices around, but I’ve never heard of anything portable.
You know what? Braille is just a different alphabet. I’m sure it would be easy to learn. I’ve got to find a tutorial somewhere.