With Card Guard from America First, your iPhone puts you in control. Using America First Card Guard, you can determine where your Visa cards can be used and where they cant. Youll set the amounts, locations, merchants, and/or transaction types your America First cards will process. Control or alert changes take effect instantly so you can make changes on the go.-Receive real-time alerts anytime your card is authorized or declined or create them based on your preferences. -Lock your card when you're not using it and turn it on when you're ready to pay.-Set a dollar threshold that limits your card transactions to an amount you specify.-Define a geographic location where your cards will work or select My Location to authorize charges in the vicinity of your iPhone. -Specify which kinds of merchants or transaction types can clear your account.America First Card Guard - Security you control.