Explained: Tech behind smart wristbands that light up concerts and sports events

If you have recently attended a music concert of a famous artist anywhere in the world, or have watched a video of that performance, you might have also noticed colourful wristbands that sync with the music and might be wondering how 1000s of these wristbands perfectly sync, adding another dimension to the party.

These are smart wristbands, which can be controlled remotely, and they only receive input from a specific source, which means, only the organisers of a concert will have control over it. They are now being used to ensure every individual attending these parties feels they are a part of the performance.