"Here’s what you see if you look at my face: a skinny titanium headband stretched across my forehead. It looks like a futuristic pair of sunglasses, minus the lenses. On my right-hand side there’s a computer, a metal frame with a small, clear cube of plastic perched just over my eye. When I tilt my head upward a bit, or run my finger along the side of the frame, the cube lights up. What I see, floating six inches in front of me, is a pinkish, translucent computer screen. It gives me access to a few simple apps: Google search, text messaging, Twitter, a to-do list, some hourly news headlines from CNN (“See a Truck Go Airborne, Fly Over Median,” “Dolphin Deaths Alarm Biologists”). Beside the screen is a teensy camera built into the frame of the glasses, ready to record anything I’m looking at."