How U2’s technology is changing concerts for the better

“The two things you can’t have up here are vertigo and a need for stability.“ U2 bassist Adam Clayton is giving me a tour of “the barricage“, a 29-metre long, double-sided LCD screen that the band climb inside of every night of their Experience and Innocence tour. The walkway spans the entire length of Amsterdam’s Ziggo Dome, linking the main stage and a smaller, circular platform at the far end of the arena.