# Payment with Coin เมื่อลูกค้าเข้ามาถึงหน้าสรุปยอดเงิน ```mermaid sequenceDiagram autonumber participant APP participant Backend participant Token X participant Payment APP ->> Backend: Request Passcode and Login Backend ->> Token X: Request Login Token X -->> Backend: return token to app Backend -->> APP: return token to app APP ->> Backend: fetch Transaction Backend -->> APP: return transction APP ->> Backend: perform payment send coin Backend ->> Token X: payment send coin Token X -->> Backend: response Backend -->> APP: response APP ->> Payment: payment Payment -->> APP: return