The Persistent Identifiers
When you log into a website or add an item to a shopping cart, the server places a small text file called a “cookie” on your computer. This cookie is how the website remembers who you are the next day. While convenient, advertising networks also use these cookies to secretly track your browsing habits across different websites for months at a time. While you can manually clear your cookies in the settings menu, a truly privacy-conscious user shouldn’t have to remember to do that. You can configure Google Chrome to act like a temporary vault, automatically incinerating every single cookie the exact second you close the browser window.
How to Clear Cookies on Exit
You can enforce this strict deletion policy within Chrome’s site data settings.
- Open the Google Chrome desktop browser.
- Click the three vertical dots (⋮) in the top right corner and select Settings.
- In the left-hand sidebar, click on Privacy and security.
- In the main window, click on Site settings.
- Under the “Content” section, click on Additional content settings, then select On-device site data.
- Look for the radio button option labeled “Delete data sites have saved to your device when you close all windows.”
- Select that radio button.
The Amnesia Effect
This setting drastically changes how you interact with the internet. Every time you open Chrome, it will be a completely blank slate. You will have to manually type in your username and password for every single website (like Gmail or Facebook) every single day, because Chrome has intentionally forgotten who you are. The trade-off for this massive inconvenience is absolute privacy; advertisers can no longer build long-term profiles on you because their tracking cookies are destroyed every night.