![]() ![]() Conclusionĭisabling JavaScript doesn’t prevent your device from being fingerprinted, as most browsers will still leak an abundance of data such as IP addresses, behavior patterns, and more. Gill Sans and Helvetica Neue are available on macOSĪs you can see, installed fonts are an effective way to tell operating systems apart.Calibri and MS UI Gothic are available on Windows.Roboto and Ubuntu are available on Android and ChromeOS.Here’s a simplified example of how this works:įunction getMainPageHTML ( ) As a result, all HTTP requests from the main page contain the token, and different visitors requesting the main page receive unique pieces of HTML code. The server links the requests of a single visitor together using a unique random token by inserting this token into the main page’s HTML code. ![]() Your device signals stay the same as you visit different websites and subsequently can be used to reliably identify and track you over time. The server extracts meaningful pieces of data - or signals - from the HTTP requests and stores them in a database. The list of requests and the request contents depend on your specific device and browser (more on this later). When you open the main page of the demo, your browser sends several HTTP requests to the demo’s server automatically. ![]() These are just a handful of the many use cases where fingerprinting can uniquely identify devices, even as other methods fail.
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