Nosetongue
this was a form os locking device developed by the Yuuzhan Vong. Used to limit access to portals and chambers, the nosetongue was a small indentation in the wall, into which a Yuuzhan Vong placed their fist. The nosetongue's sensitive pallette tasted and analyzed the secretions of the Yuuzhan Vong, then determined if the individual had been granted access or not. If the individual was allowed to enter, the nosetongue instructed the hatch sphincter or other door mechanism to open.