Research from Huawei’s Moscow Research Center details one way to thwart a popular open-source algorithm used to detect whether there’s a face in an image or not, a crucial first step before the system matches that face against a database of known faces.
The Huawei paper shows how two stickers, each with a specific pattern that looks like a deformed QR code, can fool a face detection algorithm with 95% accuracy once they’re placed on a subject’s cheeks. If you’re savvy, you can fork the code and play with it yourself on GitHub.
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