#3 Hidden by material color Example of a QR Code that lacks color contrast from the background material In the example below, you can see that the design actually looks better when the QR Code colors contrast from the background, yet still, match with the overall design. Maintain the quiet zone and make sure that the pixels stand out against the background or any surrounding color designs. Solution: Design QR Codes to match the background colors, but not in a manner that the QR Code is lost in the design. Example of a well-designed QR Code with good color contrast A scanner can’t determine what is the design and what is the QR Code. Problem: The background material color is the same as the QR Code so the QR Code has faded into the design. #2 Design color mismatch Example of a QR Code with no color contrast from the background Nevertheless, this is not a reason to reduce the quiet zone perimeter to compensate. The more data that you add to a QR Code, the smaller those pixels will become. When in original form, the modules are the black pixels that make up the QR Code (or also come in color when customized). The ideal size would be if the quiet zone is at minimum four times larger than the width of your QR Code modules. Solution: Make sure to always leave enough space for the quiet zone. Example of a QR Code with the appropriate quiet zone width Because the design has left out the quiet zone, the scanner can’t determine what is the graphic and what is the QR Code. In the photo below, note that the QR Code pixels are red, as well as the background color of the total image. Problem: The quiet zone that distinguishes the QR Code from the surroundings is too small or nonexistent, so the QR Code can’t be read. #1 Not enough space around the border Example of an unscannable QR Code without the quiet zone Here we’ve outlined the most common QR Code scanning problems and how they can be resolved. There are things to look out for such as color mismatches, materials the QR Code will be used on, its size, and more. While QR Codes are quite the sturdy technology and are easy to read with any smartphone, sometimes improper designs can render them unscannable. Typical QR Code scanning problems & their solutions Quiet zone: This space separates the data in the QR Code from surrounding graphic elements so that a scanner knows what to scan. QR Code format informationįormat information: These sections include error tolerance levels, as well as the data mask pattern (the pattern that creates the QR Code), so the QR Code is easy to scan. Out of seven total structural elements of a QR Code, there are three that focus on error correction: QR Code data and error correction keysĭata and error correction keys: These patterns hold the bulk of the data linked to the QR Code. This makes QR Codes extremely weather-resistant, which is what makes them ideal for product packaging that undergoes global shipping, as well as on print materials like billboards or posters that are hung outside. The pixelated parts you see on a QR Code are doubled so that if some are damaged, then others make up for them and still convey the data to the scanner. Known as error correction, QR Codes can sustain up to 30% of structural damage and still continue to function. QR Codes are structured in such a way that they can withstand errors, which is another of their benefits that goes beyond Barcodes. That’s why businesses around the globe have begun to use them to generate sales, as well as for internal business processes. They are also fantastic for marketing campaigns because they reach both mobile and desktop users, as well as can link to a huge variety of information through the different types of QR Codes, in which each QR Code is customizable. In China, they are used across the board in daily life. These many advantages are what has made QR Codes so popular. They can also be created in large batches, as well as come in editable and updatable versions known as Dynamic QR Codes. Consequently, they can hold much more information than Barcodes and are more accessible to the average person. This is why QR Codes were invented: they can be read both horizontally and vertically due to their square shape, as well as are easy to scan for any smartphone. As a result, Barcodes are quite limited in the information they can hold and were not enough for supermarkets that needed to increase their available products in order to meet customer demand. Barcodes are 2D, meaning they can only be read by a special scanner in a horizontal direction. QR Codes were originally developed as more advanced versions of Barcodes to help with product inventory management.
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