Pure Card Terminals integrates your card machine with Shopify POS. It works with terminals from eCentric, Transaction Junction, Peach Payments, and Paystack — all managed from a single app.Staff tap the tile on the POS home screen, pick a terminal, and the cart total is sent to the card machine. The customer taps or inserts their card and the payment is processed.For refunds, staff open the order and tap Process Card Refund. The refund amount is sent directly to the terminal.