Cybersecurity experts have raised a new concern: the classic peace sign gesture in selfies might help criminals lift your fingerprints and steal biometric data.
Modern high-resolution cameras and AI-driven technology can now analyze even partially visible fingerprint ridges, according to specialists. The risk is greatest when a photo is taken up close with fingers pointing directly at the lens. Chinese expert Li Chang demonstrated this on a television show. Using a celebrity photo, he showed that shooting from less than 1.5 meters away yields enough data to reconstruct a fingerprint.
He noted that even images captured from around three meters away can capture part of the necessary pattern. Modern algorithms and neural networks can enhance photos and recover details once considered too blurry.
Professor Jing Jiu of the Chinese Academy of Sciences confirmed this. He said image processing has advanced significantly, and AI can now sharpen fingerprints even in imperfect shots.
After the demonstration went public, the topic trended on social media, sparking widespread discussion. Some users became wary of posting any close-up hand photos or gestures.
Experts caution, however, that actual fingerprint replication typically requires good lighting, favorable shooting conditions, and multiple angles. Still, the risk is growing as AI tools evolve.
They advise being more mindful of publicly shared photos. As a precaution, avoid close-ups of fingers or slightly blur the fingertips before posting on social media and messaging apps.