After Roland hung up, Nightingale placed a silver white ring on his desk.
It was a ring made of two shards of aluminum that could hold a roll of paper as small as a person's palm specifically designed for carrier pigeons. The combination of the ring and Soraya's "ultra-thin paper" enabled them to deliver more messages at a time. Instead of tying notes to the messengers' claws, they could now simply attach them to this ring.
To prevent accidents en route, each local Administrative Office set up a post station for messengers who flew over 500 kilometers to take a rest before taking off for the next station. To more efficiently sort encrypted mail, the ring was embossed with an identification code similar to train tickets in modern society. The identification code would instantly tell mailmen where this encrypted letter came from and where it should go.
