Researched
QR Code
A two-dimensional code that holds far more data than a barcode and can be read quickly from any angle.
Open in the interactive tree →Denso Wave released the QR Code in 1994; the car industry first used it to track parts from production to shipping. Phone cameras later made it a general link between objects, payments and the web.
Prerequisites
Unlocks
Sources
More in Transport & Mobility · Digital Age
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