The Credit Card Gateways tab of the Options dialog is where credit card payments are configured, so that you can accept credit card payments from customers using Copper Point of Sale Software. Credit card gateways can virtually take the place of physical credit card swipe machines and process your customer's payments securely. A list of the available credit card gateways appears on this tab. If you do not see any gateways, click the Update List button to refresh the list. By updating the list, you will see credit card gateways that have been tested with Copper Point of Sale Software. To configure settings for a gateway, select it from the list so that its name is highlighted, and click the Options button. To enable a credit card gateway for charging customers, check the box to the left of its name. Only one credit card gateway can be selected at a time. Note that if you do not enable a gateway by checking its box, credit card charging with Copper Point of Sale Software will not be possible.