Meet the O’tatmo Lightband: a wearable device for concerts and festivals. It lets you control how the light shines and in what color. It has a proximity sensor and lets you use its multi-color LEDs to express yourself. The battery lasts up to 8 hours. You can activate the light by opening your hand. Double clap to change color. A single click changes light pattern.
This interactive lightband is currently getting funded on Kickstarter.