We may collect personal identification information from Users in a variety of ways, including, but not limited to, when Users visit our site, register on the site, place an order, click email links, click advertisements, visit partner sites, click links on social media, subscribe to the newsletter, respond to a survey, fill out a form, and in connection with other activities, services, features or resources we make available on our Site. Users may be asked for, as appropriate, name, email address, mailing address, phone number, and/or credit card information. Users may, however, visit our Site anonymously. We will collect personal identification information from Users only if they voluntarily submit such information to us, or if such information is provided via an integrated service such as Twitter or Facebook, or advertising partners. Users can always refuse to supply personally identification information, except that it may prevent them from engaging in certain Site related activities. Our email and website systems are integrated in such a way that email clicks, website login activity, pages visited, and other user activities are available to our customer support team, in order to enhance the user experience.
Source : https://www.principalcenter.com/privacy-policy-terms-conditions/