QR Codes Explained: The Tech Behind UPI Payments

The Better India · she

QR codes, invented in Japan in 1994, are two-dimensional data grids storing information like merchant UPI IDs and transaction details. These codes, composed of modules, feature finder patterns for easy phone camera detection and orientation. A quiet zone surrounds the code, aiding scanners. Upon scanning, your phone decodes this information, enabling swift UPI payments after PIN verification, transforming everyday transactions from small.