Final answer:
A QR Code contains exactly three Finder Patterns. These are located at three of the four corners and are essential for QR scanners to detect and decode the code effectively.
Step-by-step explanation:
The student has asked about the number of Finder Patterns in a QR Code. QR Codes (Quick Response Codes) always contain exactly three Finder Patterns located at three of the four corners of the square-shaped code. These patterns are crucial for QR Code scanners to identify and orient the code properly before decoding it. The patterns consist of a distinctive arrangement of squares that are easily recognizable.
Each Finder Pattern includes a larger square, then a smaller square inside it, and another even smaller square inside the second square, creating a target-like effect. These patterns allow scanners to determine the orientation of the QR Code, no matter the angle from which it is scanned. Since the three Finder Patterns serve such an essential role in the function of QR Codes, they are a major factor in the robustness of QR Code technology, enabling them to be scanned quickly and reliably.