What is canvas fingerprinting?

Posted by: Jennifer Cefai (3 years, 12 months ago)

There always seems to be a new way to track users' web activity across the web. One of the lesser-known ones is canvas fingerprinting, which is an upgraded version of the internet cookie. The way it works is through JavaScript, which when enabled takes a "snapshot" - or a fingerprint - of the computer's graphics chip. This image is then used to send targeted advertisments to the computer in question. While canvas fingerprinting tracking sounds high-tech, it can be highly inaccurate - two or more computers sharing the same graphics chip can render the same configuration. In any case, it is still highly invasive, and considered to be even more so than traditional internet cookies.

However, rest assured that there are several apps available to protect your privacy. For example, DoNotTrackMe is a great add-on to any browser, including Chrome, Internet Explorer, Safari, Firefox and Opera. With the way canvas fingerprinting works, DoNotTrackMe can block any requests made for user-related content, including the JavaScript-related ones that single out canvas fingerprinting. 

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