QR 码 – 十多年前由 Denso-Wave Corporation（日本）推出的矩阵码，最初仅用于汽车行业，但其实用性很快在其他行业中得到认可。条形码只不过是一个包含物体信息的光学标签，读取是通过特殊设备进行的，在我们的例子中，是移动设备的摄像头。快速响应代码看起来像在白色背景上随机排列的黑色小方块。
这种二维条码在现代生活中随处可见——在购物中心的产品包装上、印刷出版物的页面上和互联网资源上。使用二维码加密的信息，人们可以快速访问特定资源，该资源的链接写在代码中，阅读电子邮件、短信、查找坐标等等。在大多数现代智能手机和平板电脑中，系统中默认存在读取条形码的程序。但此类实用程序的便利性和功能性并不适合所有用户。
在这些情况下，替代软件来救援，所以实用程序 QR & 条码扫描仪 可让您快速准确地读取任何条码，例如，自动连接到 Wi-Fi 网络、访问 URL、读取书籍版本的唯一编号（ 国际标准书号） ，只需查看有关所选产品的完整信息。程序中有一些有用的功能，例如打开闪光灯、自动对焦、反转条码、查看整个扫描历史记录。
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