What are Web beacons?
Web beacons are small strings of HTML code that are placed in a Web page. They are sometimes called “clear GIFs” (Graphics Interchange Format) or “pixel tags.” Web beacons are most often used in conjunction with cookies. DoubleClick uses Web beacons in connection with its products and services, including ad serving and paid search listings (“DART Search”). Because a Web beacon is only 1 pixel high by 1 pixel wide, it appears invisible on your computer screen. If Web beacons were made larger (e.g., 100 pixels high by 100 pixels wide), it would take much longer for your Web page to load and would clutter up the page that you have requested. In 2002, working with a broad spectrum of companies, including other technology companies, seal providers and websites, DoubleClick helped draft “Best Practice” guidelines for disclosing the use of Web beacons. Please click here to see these guidelines – and a list of the companies that participated in developing them.
Generally, a Web beacon consists of a small string of software code that represents a graphic image request on a Web page or email. There may or may not be a visible graphic image associated with the Web beacon and often the image is designed to blend into the background of a Web page or email. Web beacons can be used for many purposes – including site traffic reporting, unique visitor counts, advertising auditing and reporting, and personalization. A significant majority of Web beacons collect only anonymous data. However, some may be used to collect PII, particularly in the case of email that contains a Web beacon. In such cases, the data collected through the Web beacon may be linked to the recipient’s email address or other information identifying the recipient.
