_______ are used to identify a user who returns to a Website
Cookies are used to identify a user who returns to a Website.
A cookie is a small file of letters and numbers downloaded on to your computer when you access certain websites. Like virtual door keys, cookies unlock a computer's memory and allow a website to recognise users when they return to a site by opening doors to different content or services.
Cookies are indeed tiny programs (text files) , not spyware, and they are usually placed clandestinely by web sites (web servers) in your computer to gather certain information about you such as your surfing habits. ... But Cookies are good sometimes because they do things that looks like magic.
An HTTP cookie (also called web cookie, Internet cookie, browser cookie, or simply cookie) is a small piece of data sent from a website and stored on the user's computer by the user's web browser while the user is browsing.