The way the face mask works is that the mask has a mount that holds a small DLP projector facing away from it, and the projector is connected to the Raspberry Pi. The result is that you can change the appearance of the mask by projecting different videos and images onto it. You can do cool animations, or just steal other people's faces. This is a very creepy concept. Also called projection mapping.
The mask itself was designed by Kongorilla on Thingiverse. The author remixed the mask by removing some material here and there and adding some places to mount poles and projectors. Plug it into Fusion 360 and start designing!
The product design is open source and very cool and beautiful.
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