Though the rest of Occupied Japan continued to use regular Japanese yen throughout the Occupation, military scrip was introduced in Okinawa because, even at that time, the US military government intended to continue occupation of Okinawa long after ending it in the Home Islands.
Following the condemnation and death of the daimyo Asano Naganori, for example, Ōishi Yoshio, a house elder in the Akō Domain (and later the leader of the Forty-seven Ronin), ordered the redemption of scrip at 60% of face value.
Truck system, a system of payment in the form of goods and services rather than funds usable elsewhere, forcing the employee to buy only the employer's goods with a scrip.