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by root_axis 306 days ago
They are, but without cookies nearly all of the value disappears because there is no way to correlate sessions across domains. If commercesite.com and socialmediasite.com both host a tracking script from analytics.com that sets data in localstorage, there is no way to correlate a user visiting both sites with just the localstorage data alone - they need cookies to establish the connection between what appears to be two distinct users.