Scanning a QR code without your phone requires a little help from Google or a webcam.

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?

You can use WhatsApp on your laptop in two ways. The first is by visiting the official website [web.whatsapp.com]. The second ...