A smartphone that can tell if you're depressed?

FOX's Rich Denison explains:

How would you like your computer or smartphone to pick up on your mood?...

Researchers at MIT are working to develop a system to detect emotions by measuring heartbeats through a wireless signal bouncing off your body...

The scientists say their device is 87 percent accurate in checking heart rate, and can learn how someone reacts to specific emotions, like happiness, sadness or anger...

The folks at MIT's Computer Science and Artificial Intelligence lab believe their system could help diagnose depression or anxiety, or be used by advertisers to gauge audience reaction.

Rich Denison, FOX News.