Se giochi online, puoi incontrare altri giocatori, tuttavia non identificati da nessun TAG o NICK.
Ti riporto il wikia che è meglio: Multiplayer
If the player is playing online, they can encounter other players while on their way, called companions. However, players cannot speak to each other (neither via voice nor text), nor are identified by any username, gamertag or avatar. They can communicate only via a wordless shout, and have symbols on the front of their robes, so players can identify whether they have already encountered a given fellow traveler or not. They can, however assist each other.
According to the game's designer, Jenova Chen:
"it's about two strangers who meet online. They don't know who they are or how old they are. All they know is, that is another human being."