How the TikTok algorithm identifies you | WSJ

The Wall Street Journal created dozens of automated accounts that watched hundreds of thousands of videos to reveal how the TikTok algorithm knows you so well. A Wall Street Journal investigation found that TikTok only needs one important piece of information to determine what you want: the amount of time you spend on a piece of content. Every second you hesitate or look again, the app follows you. Photo illustration: Laura Kammermann/The Wall Street Journal WSJ video investigations use visual evidence to reveal the truth behind the biggest stories of the day. Inside TikTok’s Highly Secret Algorithm This WSJ video investigation reveals how the video-centric social network is so good at determining interests you never expressly tell it. More information from The Wall Street Journal: Visit WSJ.com: http://www.wsj.com Visit the WSJ Video Center: https://wsj.com/video On Facebook: https://www.facebook .com/pg /wsj/videos/ On Twitter: https://twitter.com/WSJ On Snapchat: https://on.wsj.com/2ratjSM #WSJ #TikTok #Algorithm

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