AI-powered cameras dot streets across the world, equipped with the power to identify faces or vehicle license plates. But a public backlash is gaining momentum.

Privacy concerns abound, encompassing the lack of consent for capturing data, how that data is stored and used, and the risk of misuse. Those concerns are motivating people to fight back. The DeFlock project, for instance, maps automated license plate readers (ALPRs) to raise awareness. Some people resort to extreme measures, such as vandalizing or damaging ALPRs. Others are stitching together more creative responses, crafting “adversarial fashion” to evade surveillance cameras, like a Kickstarter project called noRecognition, presented at last month’s DEF CON hacker convention.

In 2025, cybersecurity expert Bill Swearingen began experimenting with a simple Python-based fuzzer, a tool that provides invalid inputs to reveal software bugs, security vulnerabilities, or unexpected behavior. The fuzzer targeted one of the most popular object detection frameworks, called YOLO. He then developed what he’d learned into a reinforcement learning algorithm that generates various adversarial patterns, which he presented at DEF CON.

Each pattern is a colorful geometric abstraction he has tested against 11 object detection models—four that search faces, two that recognize faces, and five that detect people—most of which are publicly available. Successful patterns thwart the object-detection systems, lowering their confidence scores, sometimes even to the point of no detection.

“Privacy is a human right, and the popularity of this just goes to show that people are interested in preserving their privacy,” Swearingen says.

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