input: [Cookie] Pardot [Name] visitor_id, pi_opt_in, pardot [More Information] View Pardot Privacy policy [Purpose] 
output: Pardot tracks visitor and prospect activities on your website and on Pardot landing pages by setting cookies on their browsers. These cookies are set in order to remember preferences when an individual returns to your site, such as form field values. We also set a cookie for Pardot users that are logged into our app, which allows us to maintain the login session, remember table filters, etc.