This article taught me how to scan QR codes from photos already saved on my phone, not just printed ones. It explains easy steps for both Android and iPhone, using built-in apps like Google Photos and iOS Photos, plus online tools and third-party apps if needed. The guide gives helpful tips, troubleshooting advice, and real-life examples, like scanning payment codes or event tickets. I liked how the article also suggests using QR codes for sharing photos at events. Overall, I found it clear, practical, and very useful for anyone wanting to unlock QR codes from images.