Apple is set to roll out a feature that would require apps to ask users' permission before tracking them. Facebook has been among the most vocal opponents to the change, saying it could hurt its advertising business. But small businesses could bear the brunt of it. Tech columnist Christopher Mims joins host Amanda Lewellyn to discuss. Christopher Zinsli is our supervising producer. Kateri Jochum is the executive producer of WSJ Podcasts.
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