So, when you’re texting your friends on the go, you can easily continue all conversations on your desktop computer or laptop once you reach it, instead of having to switch between two devices.
To chat with your WhatsApp contacts in Opera on your computer, go to web.whatsapp.com and scan the QR code displayed there, using WhatsApp on your phone. (You’ll also see simple instructions on this same page.) To date, this login function has been implemented for Android, Windows Phone, BlackBerry, S40 and S60. Hopefully, iOS will follow soon, as well.
Have fun chatting with your friends!