ByteDance-owned VR device maker Pico released its 4 Pro virtual reality headset on Wednesday, touting its eye and face-tracking features. The company says that the Pico 4 Pro can rapidly determine who is using the device by measuring pupil distance. The headset adjusts to different eyeballs and can remember several pairs of eyes so that, for instance, family members of the owner can share the device easily. Pico says the VR device is adept at reading human expressions via its double eye-tracking infrared cameras and its face-tracking infrared camera, with the company claiming its 4 Pro is the first all-in-one VR headset in China to realize this function. Pico has upgraded storage capacity for the 4 Pro to 512GB, twice that of the previous generation, and offers LRDDR5 memory and 6,070mAh battery capacity. The 8GB + 512GB version is priced at RMB 3,799 ($552). [IThome, in Chinese]