If you're blind, finding your way through a new area can sometimes be challenging. In the future, though, you might just need to wear a headset. Caltech researchers have developed a Cognitive Augmented Reality Assistant (CARA) that uses Microsoft's HoloLens to make objects "talk" to you. CARA uses computer vision to identify objects in a given space and say their names -- thanks to spatialized sound, you'll know if there's a chair in front of you or a door to your right. The closer you are, the higher the pitch of an object's voice.