QR codes, short for "Quick Response" codes, are two-dimensional barcodes that store data in a pattern of black squares on a white background. Unlike traditional barcodes, QR codes can be scanned in multiple directions, allowing them to hold much more information. Originally created in Japan by Denso Wave in the 1990s for tracking parts in manufacturing, QR codes are now used worldwide for everything from payments and marketing to healthcare and education.

A QR code works by being scanned using a smartphone camera or QR code reader, which detects key position markers and decodes the embedded data. In India, the use of QR code scanners and wide web printers has made it easier to print and deploy QR codes across various industries.

Benefits include instant information access, contactless usage, cost-effectiveness, and tracking capabilities. However, QR codes do have limitations—they require internet access, compatible devices, and pose potential security risks if misused.

With growing digital adoption in India, QR codes are becoming essential for bridging offline and online experiences. Used wisely, they offer a smart, scalable, and efficient way to share and access information in today’s fast-paced world.
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