WebKit, the open source engine that underpins Internet browsers including Apple’s Safari browser, has announced a new tracking prevention policy that takes the strictest line yet on the background and cross-site tracking practices and technologies which are used to creep on Internet users as they go about their business online. Trackers are technologies that are invisible to the average web user, yet which are designed to keep tabs on where they go and what they look at online — typically for ad targeting but web user profiling can have much broader implications than just creepy ads, potentially impacting the services people can access or the prices they see, and so on.

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