Answer:
Cookie
Explanation:
Web tracking is a process by which website owners track activity of users to ascertain their browsing habits such as what they buy, products they regularly view, and so on.
Cookies are text files that store small pieces of data used in identifying a particular user's computer when a network is accessed.
A unique ID is tired on the cookie to track activity on the website.
The information gotten is used to improve user experience.
For example when a user makes a television purchase, advertisement of televisions can be sent. This allows the user expand more on their areas of interest.
