Hey remember that Face ID feature? In an unusual turn of events, we actually tested it before we tore the phone down. Turns out our IR-enabled video camera isn't fast enough to snag the dot pattern, but we can see the illumination alright!

History time: way back in the day, Microsoft made a nifty spatial sensor called the Kinect. The infrared dot matrix tech powering it was created by Israeli tech company PrimeSense.

Apple bought PrimeSense for a cool $360 million way back in 2013, and has surely invested hundreds of millions more since then bringing this to market.

Meanwhile, Microsoft was left in the lurch and had to scramble to develop a new sensing system for the Kinect 2. Perhaps now that the iPhone has a depth sensor, people will attach it to drones, too!