Golden tablets with the seal of the ruler that issued the pass and the seal and name of who it was issued to. About the size of your palm of solid intricately etched gold. The holder of the tablet is backed by the authority of the king to make any required purchases on credit or enter any place they deem necessary. A very powerful token indeed.
A society or country has a unique method of correction. Criminals are imprisoned in a dungeon with two options: Serve their time, or try to escape. Those who manage to escape alive, their crimes are forgiven early.