When I first heard Apple was building Face ID into its iPhone X as a handy (make that hands-free) method for unlocking the screen, I was skeptical. Would it work if you’re wearing sunglasses or a hat? What if you’re in low light conditions? I assumed it would fail just often enough to make those who use iPhone’s Touch ID fingerprint scan regret the day they upgraded.
But after talking to a friend about his recent iPhone X purchase, I’m rethinking my thinking. He said the speed and ease of Apple’s Face ID grew on him. In a hurry. The tech behind it is cool: A True Depth Camera near the top of the phone creates a contour map of your face using 30,000 dots of infrared light that are invisible to the human eye. This fractal facial is encrypted and locked in your device – it’s never backed up to the iCloud or anywhere else.