The valet goes to the parking space, picks up the car, then drives it back to the customer. The valet sees that it says D46 and knows the precise parking spot. When the person returns to the valet, they hand over their ticket. The person might have no idea where D46 is, but it doesn’t matter. Often this will have some information on it that is completely meaningless to them, such as a company-only code for a parking spot, like D46. When a person hands over their car keys to a valet, they are given a ticket or token in return. The data tends not to be particularly meaningful for the recipient program, but gives the other program significant information when they interact in the future.Ī good way to think of them is like a ticket for valet parking.
Then there’s the sinister, yet widely known use: tracking you across websites, often so that some organization can make money from advertising.Īt their core, cookies are just packets of data that are passed between computer programs. Without them, you might have to reenter your username and password every time you try to go to a new page.Ĭookies can also help to remember your preferences, such as your favorite settings on a website, or how you like a certain page to look. They can help to keep you securely logged into a website as you navigate across its pages.
You may have even heard that third-party cookies are slowly being phased out. However, most people tend to get fuzzy when it comes to the details of how they work, and how they can avoid being tracked by them. You’ve probably heard about cookies and know that they are involved in tracking you across the internet.
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