Linked by Thom Holwerda on Tue 22nd Jul 2014 08:49 UTC
Internet & Networking

A new, extremely persistent type of online tracking is shadowing visitors to thousands of top websites, from to

First documented in a forthcoming paper by researchers at Princeton University and KU Leuven University in Belgium, this type of tracking, called canvas fingerprinting, works by instructing the visitor's Web browser to draw a hidden image. Because each computer draws the image slightly differently, the images can be used to assign each user's device a number that uniquely identifies it.

Advertising companies will become increasingly... 'Creative' to find some way of tracking us that circumvents known laws and technological barriers. However, I doubt you have to worry about the small fish - worry about what the biggest internet advertising company in the world has cooking in its labs.

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Noscript blocks this
by oskeladden on Tue 22nd Jul 2014 09:55 UTC
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It isn't 'virtually impossible' to block. Noscript can be set to block canvas requests even when you have Javascript enabled, and has had this capacity for ages. By the standards of tracking technologies, this makes canvas fingerprinting relatively easy to block.

I agree that your typical web surfer has probably never heard of Noscript, but that doesn't mean it's hard to block - it just means most people won't block it even though it isn't particularly hard.

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