Why the total opposition to "technology" even in an outdoor setting? The idea obviously is meant to interest younger people. Music halls are struggling with significant financial setbacks.
While I would not want people to be using their cell phones for anything in the concert hall, I think of outdoor concerts (which I never attend) as promotion gigs and would not mind it greatly.
However what I found to be tasteless is the "highjacking" of the phone numbers/addresses with a return message that offered a blunt ad. Perhaps I am contradicting myself, but I cannot resolve this dichotomy for now..
If the whole intention is to get new, younger people and/or increase revenue - there's lots of different options available.
Lang Lang could put a promotional sticker, ala Nascar, on the side of the piano - maybe Red Bull.
He's already shown he's good at pleasing sponsors when he played an encore on the Apple Ipad.
He could play along to the latest DJ, and have a full setup - Lang Lang and Mix Master D, brought to you by McDonald's.
They could provide online gaming tables, and the kids could experience what it's like to play Call of Duty 4 to the pleasing strains of Mozart - perhaps it will calm their minds, and improve their aim!
He could engourage the audience to purchase the latest Iphone App - Concert Clap: it simulates the clapping of one pair of hands, to be used at concerts - of course.
The Program Book could be available only as an Iphone application, available for purchase at the venue.
He could write some transcriptions of some popular product theme songs - Imagine Lang Lang pulling off a virtuoso performance of the Mentos Song!
Why have seats, when they could just pull up in their new, hybrid cars - just like a drive-in?
Why use an acoustic piano, now that I'm thinking of it? With the big push to get rid of everything analog, lately - Lang Lang should really be performing on a clavinova - recyclable, of course.
Why stop with texting? A whole world of commercial licensing and marketing is available to the suavy and trend-following pianist, if only they have the courage and greed to follow through. Lang Lang is doing classical music a great service, by dumbing it down for the younger generation, instead of expecting the younger generation to step up a little bit. I'm sure he'll be remembered fondly some day.
Mark C has the right idea - there are far better ways to get people interested.