Technology to wear: shine a light to show how you feel

The award-winning Halo device builds on selfie culture to allow you to express your mood

Social media might be all about putting yourself in the spotlight, but a wearable device aims to make it a physical reality, too.

After working on indoor lighting projects, Nan Zhao, a PhD student in the Responsive Environments Group at MIT Media Lab in Cambridge, Massachusetts, was inspired to create Halo in an effort to wrestle lighting away from architecture and marry it to individuals. The resulting device contains 180 independently programmed LEDs that can change the colour and pattern of the hoop's light, reflecting your mood, movement levels and the weather around you by syncing the information via an app.

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