Shopify offers a customer accounts feature that allows customers to save their information for future purchases. Capital makes it easy for returning customers to log in by providing a customer account button in your shop’s top menu, right next to the cart button.
As seen in the above image, you can show a condensed version of your shop’s contact information from the customer accounts menu.
For instructions on setting this up, see the Header article.
For more information about Shopify’s customer accounts feature and instructions on enabling it, see their Customer accounts article.