> you're allowed to fingerprint a unique user and track data with that fingerprint as the sole unique identifier without any PII legislation (GDPR, CCPA, etc.)

> you're allowed to fingerprint a unique user and track data with that fingerprint as the sole unique identifier without any PII legislation (GDPR, CCPA, etc.) compliance issues. That is not true. E.g. 1. https://ico.org.uk/about-the-ico/media-centre/news-and-blogs/2024/12/our-response-to-google-s-policy-change-on-fingerprinting/ https://ico.org.uk/about-the-ico/media-centre/news-and-blogs... 2. https://ico.org.uk/for-organisations/direct-marketing-and-privacy-and-electronic-communications/guidance-on-the-use-of-storage-and-access-technologies/ https://ico.org.uk/for-organisations/direct-marketing-and-pr... specifically https://ico.org.uk/for-organisations/direct-marketing-and-privacy-and-electronic-communications/guidance-on-the-use-of-storage-and-access-technologies/what-are-storage-and-access-technologies/#device_fingerprinting https://ico.org.uk/for-organisations/direct-marketing-and-pr... This is for the UK, I am not up to date with other European regulators.