This is the same technology used by Google, Facebook, Linkedin, Pinterest, Snapchat, and Twitter. There are other services like Clearbit that offer just the dat

This is the same technology used by Google, Facebook, Linkedin, Pinterest, Snapchat, and Twitter. There are other services like Clearbit that offer just the data part of this, without the social media network attached. Every major ad network does this. There is nothing unique about TikTok's tracking implementations other than how much data they attempt to take in.