Of course you can! All you have to do is integrate with us through API! Let your customers create accounts (or upgrade them) on your website and their information will automatically be stored.
Sometimes even when someone creates an account, they don't fill in their card information until the first transaction. However, once they do it, is stored and next purchases can be done by just by simply logging in and continuing to do shopping.
It`s very convenient – you can log in in the application, from wherever you like and you can make a purchase without filling in the log payment forms.