A web cookie, a commonly used data collection technology, is simply a piece of text which can be placed on the browser of your personal computer or mobile device and subsequently read as you visit a web site. A cookie may be a session cookie, that is, a cookie that remains on your browser while you are logged on to a particular web site and then disappears when you close your browser, or it may be a persistent cookie, a cookie that remains on your browser over a period of time. Information from a cookie may be collected and used in aggregate form. Or data may be collected into an individual profile or record. That individual record may either be unique but anonymous, or the profile can be linked with information that identifies you as an individual.