What is the Kyodai number? 28 January 2026 10:20 Updated The Kyodai number is your unique customer number, used for all Kyodai remittances. Do you still need help? Speak to us Related articles How do I create my 4-digit PIN in the Kyodai App? How do I send money using my Japan Post Bank Card? Can I use biometric security to log in to my KyodaiApp? How do I update my address in the Kyodai App? How do I upload my My Number (Individual Number) in the Kyodai App?