After selecting items for purchase, you'll need to enter the address where you would like your products shipped.   Entering your address allows your merchant to calculate shipping charges, if appropriate, before you select your payment method.   Rather than selecting a credit card payment, if your merchant presents a Global Purchase Offer, you can open your banking application to review purchase details.  

If all is in order, simply authorize your purchase to your bank and your bank will inform the merchant that your purchase is complete.   Once complete, the merchant's website can display a summary page thanking you for your anonymous purchase.