nicely done
OK - this sounds fantasticly cool...
Just cause Japan seems to do everything better with cell phones - thought I'd link to this link on engadget . Apparently rather than using wifi, or bluetooth, or any other specified format of wireless communication - they are going to use the flickering of either flourescent lights or LEDs to communicate with traveler's cell phones!
I LOVE this idea.
I imagine you could do this over infrared too - like remote controls for your TV/stereo etc. But I would assume that you'd want the blinking LEDs so that you can actually SEE where the data is coming from, and point your phone accordingly!
Flickering flourescent lights... sounds kind of crazy - I guess it will flicker faster than the human eye can detect the blinking - I'd hope. But I bet any time you move your eyes past the light it would look weird.
Just a guess.