Project Morpheus is the reason behind the DualShock 4's light bar
Talk about future proof. Looks like Sony has had VR set in their minds right from the very beginning. In an interview with TechRadar, Jed Ashforth, the Senior Designer at SCEE has divulged a very big secret regarding everyone's most hated feature on the DualShock 4, the light bar.
Turns out, the light bar isn't just a fancy light that sometimes shows vital colors such as low health (Killzone Shadow Fall) or visibility (Thief) but rather, it was put in place for Project Morpheus. That's right, Sony's recently announced VR headset was in development alongside the PlayStation 4, and the light bar so happens to be an important component for the device's functionality
The tracking light… it was our department that said we need that on. It was for tracking for VR. And when all these things were coming out six months ago and everyone was going 'it's reflecting in my TV,' we were going 'oh no' because we couldn't tell anyone what it was for.
They got us good. It's still silly that the option to turn it off completely isn't present, especially for those who are completely uninterested in any sort of VR technology, but knowing that it was put in place for that specific reason, makes me hate it a little less now.