Jeremy Kirk writes on canvas fingerprinting: “Canvas fingerprinting may work best on smaller websites with stable communities, wrote Wladimir Palant, creator of AdBlock Plus browser extension, in a blog post. But it is less effective on a larger scale. “As soon as you start talking about millions of users (e.g. if you want to track users across multiple websites) it is just too likely that different users will have exactly the same configuration and won’t be distinguishable by means of canvas fingerprinting,” he wrote. Widgets such as AddThis can be entirely blocked with tools such as AdBlock Plus orDoNotTrackMe from Abine, both extensions that can block web trackers.”