Quote from the movie National Treasure: Book of Secrets: "Does not matter whether it is true. -- Give me a list of approved locations."
Keeping the error correction intact results in a faster scanning, and more compatible code in relation to various readers.
There is another benefit of using this approach.
It makes it possible to integrate multiple graphics on multiple locations in one single QR Code. This example shows a tic-tac-toe game in progress, and the word 'tic' 'tac' and 'toe' are also displayed on various locations around the graphic.
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