How QR Codes Turn Everyday Objects into Information Hubs

课文

1. A QR code is a two-dimensional barcode that stores text, URLs, or contact details in black-and-white squares.

   二维码是一种二维条形码，以黑白方块形式存储文本、网址或联系人信息。

2. Unlike traditional barcodes, it can hold over 4,000 characters and be scanned from any angle.

   与传统条形码不同，它可容纳超4000个字符，且支持任意角度扫描。

3. When you point your phone camera at one, the device decodes the pattern using image recognition software.

   用手机摄像头对准二维码时，设备会通过图像识别软件解码其中的图案。

4. Many museums now embed QR codes beside exhibits to link visitors to audio tours or historical videos.

   如今许多博物馆在展品旁嵌入二维码，引导参观者收听语音导览或观看历史视频。

5. Restaurants use them on table tents so diners can view menus, place orders, and pay digitally.

   餐厅将二维码印在桌牌上，方便顾客查看菜单、下单及数字支付。

6. Farmers print QR codes on fruit labels to show harvest date, origin farm, and pesticide test results.

   果农将二维码印在水果标签上，显示采摘日期、产地农场及农药检测结果。

7. These codes don’t require internet to store data—but linking to live content does need connectivity.

   二维码本身无需网络即可存储数据，但链接至实时内容仍需联网。

8. Security-conscious designers add digital signatures to prevent tampering with the encoded URL.

   注重安全的设计者会添加数字签名，防止编码的网址被篡改。

9. New versions like QR-Max support offline content delivery using Bluetooth LE fallbacks.

   新型二维码（如QR-Max）支持通过蓝牙低功耗（BLE）回退机制实现离线内容分发。

10. In essence, QR codes bridge physical objects and digital knowledge—no app download required.

    本质上，二维码无需下载App，即可连接实体物品与数字信息。