Shopify provides a feature called Shop Pay, which allows customers to securely save their credit card information, along with shipping and billing addresses, for expedited checkout in future purchases. When customers opt into Shop Pay, their details are encrypted and stored, enabling a faster and more convenient checkout experience across any Shopify store that offers this payment method.
If you are outside the USA and are paying with the Partial.ly installment plan option, you can save time at checkout by pre-registering for an account here.