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Wall Street Journal

How TikTok’s Algorithm Figures You Out | WSJ

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The Wall Street Journal created dozens of automated accounts that watched hundreds of thousands of videos to reveal how the the TikTok algorithm knows you so well

A Wall Street Journal investigation found that TikTok only needs one important piece of information to figure out what you want: the amount of time you linger over a piece of content. Every second you hesitate or rewatch, the app is tracking you. Photo illustration: Laura Kammermann/The Wall Street Journal

Inside TikTok’s Highly Secretive Algorithm
This WSJ video investigation reveals how the video-centric social network is so good at figuring out interests you never expressly tell it.

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