Coldplay are at the forefront of live music technology and all round fun with their most recent gig addition.
They've been turning their audience into interactive participants at recent concerts by handing them Xylobands, LED-illuminated wristbands that can be activated all at once using a radio signal. The wristbands come in a variety of colors and have the Twitter hashtag #coldplayfilm printed on them to promote the band’s live DVD. When ‘turned on’ at certain points during the concert, the audience is illuminated with multicolored twinkling lights like a giant display.
The Xylobands help to create a sense of community between the fans and connect them to the artist. After the concerts, they can either recycle the wristbands on-site or keep them free of charge to take home as souvenirs.
via PSFK: http://www.psfk.com/2012/06/coldplay-audience-led-display.html#ixzz1xmq78OwC