Websites use browser fingerprinting to track users across sessions and sites, which is harder to detect or prevent than cookies.
Browser fingerprinting collects unique browser data, allowing websites to identify users even if cookies are cleared.
The research confirms that websites track users without their knowledge, even if they opt out under privacy laws like GDPR and CCPA.
The researchers developed a framework, FPTrace, to identify and analyze the extent of fingerprinting on websites.
Fingerprinting impacts online ad targeting and user tracking, highlighting the need for stronger privacy tools and regulations.
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