At the post office in Uptown Springdale, one of the counters will allow you to enter passwords. Some passwords are found by chasing after the Yokai Criminals and sharing your results with other people, but others are given out by the companies in charge or even found in-game. You can get some pretty nice stuff from these passwords, but the biggest catch are the special coins (Excitement and Five-Star). Below are all of the passwords that yield those two coins, which can be used at the Crank-a-kai for a chance at the rare Yokai.

• Thank you - Five-Star Coin
• TW0B1T5 - Excitement Coin
• FOURB1T5 - Excitement Coin
• 31GHTB1T5 - Excitement Coin
• AD0LLAR - Excitement Coin
• U4WH15P3R - Excitement Coin
• ST4NDUP - Excitement Coin
• ANDH0LL3R - Excitement Coin
• L3TM3W1N - Five-Star Coin
• G00DLUCK - Five-Star Coin
• G3TAG00D1 - Five-Star Coin
• PL3AS3W1N - Five-Star Coin
• 1G00DTURN - Five-Star Coin
• GH05TLY - Excitement Coin
• 3TH3R3@L - Excitement Coin
• 5P3CTR@L - Excitement Coin
• PH@NT@5M - Excitement Coin
• 33R13 - Excitement Coin
• WR@1THL1K3 - Excitement Coin
• UN34RTHLY - Excitement Coin
• H4UNT3D - Excitement Coin
• 5H@D0WY - Excitement Coin
• @PP@R1T10N - Excitement Coin
• 5P3CT3R - Five-Star Coin
• 5P1R1T - Five-Star Coin
• 5P00KY - Five-Star Coin
• B1Z4RR3 - Five-Star Coin
• UNC@NNY - Five-Star Coin
• MY5T3R10U5 - Five-Star Coin
• 3N16M4T1C - Five-Star Coin
• CRYPT1C - Five-Star Coin
• PH@NT0M - Five-Star Coin
• GH0STL1K3 - Five-Star Coin