QR (Quick Response) codes are a type of matrix barcode that consists of black squares arranged on a white background. These codes can be scanned using a smartphone or QR code reader, allowing users to quickly access information or perform various actions. By scanning a QR code with the camera on their device, users can unlock a wealth of content, such as website links, product details, event registrations, and payment options. The combination of 🔍 (magnifying glass) and 💳 (credit card) signifies the ease and convenience of using QR codes for exploring and making secure transactions in today's digital world.