The green, falling digital code depicted as rain in the film "The Matrix" consisted of Japanese sushi recipes.

The iconic green falling code in *The Matrix* may seem like a deep, mysterious symbol of the virtual world, but in reality, it's based on something far simpler—sushi recipes. Simon Whiteley, the ...

Two-dimensional matrix codes that contain information that can be quickly scanned by a computer are being put to new uses seemingly every day.