Mask

Masks are a 3D printable utility and story item that can be worn when interacting with cannibals. They were added on the games release in v0.01.

Gameplay
Masks must be 3D printed using the 3D printer, which requires resin, in order to be obtained.

Theory
We see stronger cannibals (probably the leaders) wearing gold mask's, This identifies them as the leader to other cannibals,

But you can see in the trailer the player can go into a bunker and have access to a 3D printer and prints a mask. Printing a mask will be the replacement for red paint if the cannibals see you have a mask they will think of you as one of the leaders.