It is optional for you to engage in an Identification Activity. If you elect to engage in an Identification Activity, however, we may ask you to provide us with certain personal information about yourself, such as your first and last name, mailing address (including zip code), email address, telephone number, date of birth and Restaurant.com account information. When you order products or services, we may also ask you to provide us with your credit card number, expiration date and authentication codes or related information.