科学素养与生活应用·英语30篇（2）
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Why QR Codes Are More Than Just Squares
二维码为何不只是方块图案
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QR codes store data in both horizontal and vertical directions, unlike standard barcodes.二维码在水平和垂直两个方向存储数据，而普通条形码只能沿一个方向存储。
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Each black-and-white module represents binary digits that scanners decode into text, URLs, or commands.每个黑白模块代表一个二进制位，扫描器将其解码为文本、网址或指令。
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Modern smartphones read them instantly using built-in cameras and image-processing algorithms.现代智能手机利用内置摄像头和图像处理算法，可即时读取二维码。
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Restaurants use them for contactless menus; museums embed them in exhibits for audio explanations.餐厅用其提供无接触菜单，博物馆则将其嵌入展品中以提供语音讲解。
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Their error-correction capability allows scanning even if part of the code is damaged or obscured.其纠错能力使得即使部分码图受损或被遮挡，仍可正常扫描。
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Developers can customize colors and logos while preserving readability—making them useful for branding.开发者可在保持可读性的前提下自定义颜色和图标，便于品牌应用。
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Security features like dynamic QR codes help prevent fraud by changing content after each scan.动态二维码等安全功能可通过每次扫描后更新内容来防范欺诈。
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Because they require no internet to generate, QR codes remain widely accessible across device types.由于生成无需联网，二维码在各类设备上均广泛可用。