What ancient board game provided the visual model for Hara's grid-based two-dimensional code system?
Answer
Go
The conceptual breakthrough for the two-dimensional structure of the QR code occurred to Hara during a lunch break in early 1993 while he was engaged in playing the ancient board game Go. The strategic arrangement of black and white stones on the Go board served as the direct visual inspiration for creating a grid-based system where data could be encoded both horizontally and vertically, which was necessary to overcome the capacity limitations of linear barcodes.
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