Configuring Customer Accounts
From Spiffy Stores Knowledge Base
When Customer Accounts are enabled in your theme, you will see the various settings for this feature on the "Checkout & payment" settings page.
The first option allows you to choose whether customer accounts are enabled for your store, and if so, whether they are require or optional.
By default, customer accounts are disabled. Enable them here if you want to allow your customers to create accounts, which they can then use to manage their contact and address data, and to view their orders. Customer accounts are also required for other features, such as account credits, wholesale prices and customer-based shopping cart and coupon code discounts.
If you make customer accounts required, then the customer must have an account and login to that account in order to make a purchase. You might choose this option if your store is only available to specific customers, and not the general public.
Finally, if customer accounts are optional, the customer has the option of using an account, or just checkout out as a guest. A guest will not have access to any customer account features, such as customer based discounts or account credits.
Customer Account Security
As an option, you can choose to enable secure sessions for all customer accounts.
When you choose this option, all customer data and login credentials are protected by an encrypted SSL session. In order to implement this, the SSL session takes place on your spiffystores.com domain name, and not your own custom store domain name.