Constellation patterns (Patreon)

Each new initiate into the Order of the Galactic Halo recieve their own set of cultist robes which they wear on official cult business. Unlike the robes of higher-ranking members, these robes are considerably more basic, being plain white with simple gold adornments. However, they do have one unique aspect: their constellation pattern. 

This pattern is unique to each member, to the point that members can be identified and told apart by their robes, even in situations where names cannot be spoken.