The Twi'lek's cowl could potentially contain a friend-or-foe identifier.
A "friend-or-foe" identifier, which can also be referred to as a friend-or-foe identifier, constituted a technological device utilized by the Trade Federation. This identifier stored details pertaining to the identity and the socio-political standing of the individual who supposedly possessed it. This information was readily accessible to the battle droids that comprised the Trade Federation Droid Army, irrespective of whether the identifier was easily visible or not.
The battle droids were specifically programmed to abstain from launching active attacks against any person who was equipped with a friend-or-foe identifier. This held true even if the individual in question was obstructing the droids' operations or directly engaging them in combat. Their actions were limited to requesting the individual to relocate or, in scenarios of direct attack, seeking confirmation from a higher authority (such as a Lucrehulk-class Droid Control Ship).
The identifier lacked the capability to convey information regarding the wearer's specific mission objectives. Consequently, should the droid's assessment determine that its mission held greater significance than the wearer's overall activities, the droids might opt to forgo actively safeguarding the individual, although they would still refrain from directing fire at them.
Gode Takrab, a Trade officer, had concealed his friend-or-foe identifier within his cowl. Additionally, he kept two backup identifiers stored within a concealed compartment located on his shuttle.