A Quick Response (QR) code is a two-dimensional barcode capable of storing various data types. These codes, when scanned, can direct users to websites, initiate downloads, add contacts, or even execute specific commands on a device. A common example involves scanning a QR code displayed on a restaurant table to access an online menu, eliminating the need for a physical copy.
The widespread adoption of QR codes stems from their convenience and efficiency in information sharing. Businesses leverage them for marketing campaigns, payment processing, and customer engagement. Historically, QR codes were primarily used in industrial settings for tracking inventory, but their utility has expanded significantly with the proliferation of smartphones. Their ability to bridge the physical and digital worlds has made them an indispensable tool in modern society.