So for a single site and if you are not interested in remarketing, it’s a good solution. Using local storage sites definitely can track users, but it will not work for analytical services like Google Analytics, because scripts can not store data on one site and read it on another. This method works even today, with 100% accuracy, but looks like not the best choice. The company paid $510,000 and was closed. In 2012 they sued, and the judges took their side. Because you can not press a button and clear your data, and you can not disallow tracking without negative performance impact. That’s why this tracking method is quite useful.īut some people were not happy with how this platform can track users. How many people do you know, who disabled their cache? I also don’t know them. Do you allow the site to track you or not? Is VPN or proxy enabled or not? If you didn’t disable caching, the site can mark you and track all of your movements. It doesn’t matter, do you use incognito mode or no. For each user, the checksum is different, so it can be used as a unique identifier. That is how the browser detects updates on site. It is a checksum of cached files for the site. The main idea was to use Etag as an identifier. The analytical platform Kissmetrics found a way, how to identify the user by browser cache. One of the first tries to track users without cookies observed in 2011.
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