Millions of American parents have turned to apps like Bark that scan their kids’ texts, photos and chats for signs of danger—but new reporting suggests the surveillance itself may be taking a toll, as Kelly Clancy reports for MIT Technology Review.
Content-monitoring apps have become a booming industry, worth an estimated $1.57 billion in 2025 and projected to nearly triple by 2034. Bark, the category leader, says it scanned 11 billion messages from 7.5 million US children in 2025, reaching about one in 10 American kids through school programs. The apps have real successes—Bark’s marketing chief, Titania Jordan, says the FBI has thanked the company for flagging credible school-shooting threats. “I hate that we have to exist,” she said. “But I’m so thankful that we do.”
An analysis of more than 600,000 app reviews found a steady undercurrent of harm, too. Nearly one in five monitored kids reported feeling watched or stripped of privacy, one in 10 said the surveillance broke their trust in their parents, and one in 12 described lasting anxiety. False positives are common: “Ninety-nine percent of the alerts are garbage,” said Grant Callaghan, an Australian father who built his own monitoring tool after growing frustrated with commercial options.
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Pam Wisniewski, a principal research scientist at the International Computer Science Institute, argues these tools often substitute surveillance for the harder work of building resilience—teaching kids to recognize risk and cope with it, rather than simply watching them. A related CDC-backed study published in JAMA Network Open found that students tripping multiple risk flags were far likelier to later trigger a severe self-harm alert, suggesting the flags aren’t pure noise. Wisniewski says framing matters most. “If we define safety as the absence of risk, the way you keep them safe is by keeping them off the platforms entirely,” she said, “but if we define safety as the ability to protect oneself and engage without engaging a risk, the solutions look very different.”
