If you're vigilant, you can find QR codes everywhere. These black-and-white squares tie the real world to the internet, and scanning them gives you quick access to ID cards, restaurant menus ...

Once the code registers, tap the website that appears outlined in yellow on your camera display. Alternatively, you can use the Chrome browser to scan the QR code and open the web page.

Use Code Scanner on iPhone to scan QR codes and seamlessly navigate to the destination link. Use the Camera app to scan codes ...