Explains how to connect Square POS with ReceiptRoller. Connect easily via OAuth authentication, and accounting data syncs in real time.

Steps to set up the POS integration between Smaregi and ReceiptRoller. Install "ReceiptRoller Link" from the Smaregi App Market, log in with your Smaregi account, then select a store and terminal (register) from the "Connect with Smaregi" button on the POS settings screen to complete the connection. Also explains how to sync transaction data after connecting and how to handle multiple stores and terminals.

Explains the flow from a transaction to a digital receipt reaching the customer, and the issuance methods such as QR codes, the LINE mini app, and the store app.