You probably already know how to scan a QR code with your phone. It's simple enough: just open the camera app, point your phone at the code, and tap the link. What if you're on your computer, though?

QR codes are a close cousin of the bar codes on product packaging that cashiers scan with infrared scanners to let the checkout computer know what products are being purchased.

You can use WhatsApp on your laptop in two ways. The first is by visiting the official website [web.whatsapp.com]. The second option is downloading the WhatsApp desktop app from the Microsoft Store ...

The native camera app on iPhone includes functionality that allows you to scan QR codes and access QR code content like URLs without having to download a third-party app. QR codes can include ...

Here's how to generate a QR code for your Wi-Fi network to simplify login for family, friends or guests.

Here's how it works on iPhones running iOS 18 (currently in beta). Open the Passwords app. Tap the Wi-Fi card. Select the Wi-Fi network you wish to share. Tap Show Network QR code.