Simplifies the purchasing process for returning shoppers by allowing them to make a payment without entering their full card and address information. By enabling one-click payments, the shopper's details are stored during the first payment. For each successive payment the shopper only needs to enter their card security code (CVC/CVV) to complete the order.
One-click has the advantage of ensuring the full card authorisation takes place for each payment, including card security code checks and 3D Secure, if applicable. The potential disadvantage is that the shopper must be present for all payments to supply their card security code.