AI can restore blurred qr codes, experts share protection tips

On October 28, 2026, CCTV reported that an AI image tool was able to restore a QR code that had been partially obscured by a mosaic effect. This raised concerns among users about the capabilities of AI in recovering hidden information. Experts noted that AI can only restore QR codes if the obscured area does not cover the core data. If the core data is fully covered, AI cannot recover it. They advised that when obscuring QR codes, it is best to cover at least 90% of the area. A QR code is a two-dimensional barcode that uses black and white squares to represent binary data. Unlike one-dimensional barcodes, QR codes have 'positioning points' and a 'error correction mechanism' that allows them to be read even if part of the code is damaged or obscured. The article also included a disclaimer about external links and their use for informational purposes only.