Valve's weird, old VR headsets are on display at GDC

This week, Valve announced that it was partnering with HTC for the Vive headset, a virtual reality display that Valve co-founder Gabe Newell promised made "zero percent of people" motion sick. Very little was known about the Vive before release, but Valve's virtual reality prototypes have been something of a legend in the VR community — especially the "VR room," a room covered in barcodes that created a precise location-tracking system.

While it wasn't as exciting as the actual Vive, Valve had a few pieces of its history on display at the 2015 Game Developers Conference. Turns out it took a lot of experimentation to get from barcodes to lasers.