A holographic projector mounted to a belt or limb strap can be activated as an Interact action. It can be programmed to project the appearance of another creature of the same size category as yourself, hiding your true appearance. A holoskin doesn't change your voice, scent, or mannerisms. The appearance of held and worn items aren't affected. You usually need a holoskin to set up a disguise in order to
Impersonate someone using the
Deception skill.