How is the «Stored Payment Methods» customer account section implemented?

1. User interface

2. History

The «Stored Payment Methods» has been added to Magento 2.1.0-rc1 on 2016-01-15 by the following commit:

3. Relations

It is a part of the built-in Magento_Vault module.

4. Menu item

The «Stored Payment Methods» (customer-account-navigation-my-credit-cards-link) menu item:

4. The «vault_payment_token» database table structure and sample data

See also:

• How is the frontend vault payment form implemented?
• How does the Braintree module saves the current bank card for a later use?
• How is Magento\Customer\Block\Account\SortLinkInterface declared, implemented, and used?