Inside the covers, we spot familiar IR-friendly windows. All these purply dots are a bit like sunglasses for the IR sensors underneath—helping to filter out visible light so the sensors can more easily spot the IR beams from the Lighthouse base stations.

Much like on the original Vive, there's a spiderweb of photodiodes lying just under the sleek surface of the Pro—32 of them in total.

Unlike the Oculus Rift, this headset is looking for IR light—not emitting it.

Some day, someone wearing a Vive will bump into someone wearing a Rift, creating an inescapable vortex of recursive IR signals.

A couple more screws and we have faceplate liftoff—IR sensor array separation complete.