At South by Southwest, Neurowear showed off a pair of headphones that play music based on your current mood.
Mico detects your brainwaves to determine your mood, and then plays songs to match it via its iPhone app.
While music is playing, the side of the headphones indicate whether
you're focused, drowsy, or stressed out. Though, we could imagine that
some people may not want to broadcast their mood.
The headphones are not yet available, as they're still in the prototype stage, but you can see them in action below.