Here's an article
from Nice Meeting, a company in our Bay Area Startup Directory portfolio. Nice Meeting provides live event technology that pushes hard-to-see Powerpoint slides to mobile devices, so everyone can see the slides, and for more interactive presentations
We've all been there - slides that are too dense, or we're sitting too far away from the screen. Organizers try to mitigate by setting up multiple projection screens, but it seems sort of silly, when most everyone has a screen attached to their hip anyway - their smart phone. (Or tablet, or laptop.)
And anyway, those smart phones are usually a distraction - raise your hand if you're guilty of checking e-mail on your phone when you should be paying attention to the conference presentation you fought through airports to attend. Wouldn't it be nice if conference organizers can 'hijack' those devices for their own purpose, and bring people back to the conference, and away from e-mails, Twitter, etc?
Sounds like a good approach. Something that goes beyond using attendee smartphones just to track event schedules.