All that is required to use WhatsApp on a Windows PC and Mac is to visit WhatsApp ’s official WhatsApp Web page and scan a QR Code. About WhatsApp QR codes Copy link Your friends and family can add you as a contact on WhatsApp by scanning your WhatsApp QR code. Your QR code won’t expire unless you reset it or delete your WhatsApp account. Only share your WhatsApp QR code with trusted individuals. How to scan QR codes on WhatsApp One of the most common uses of the scanner in WhatsApp is to read QR codes, making it easier to access contacts or connect to WhatsApp Web without having to manually enter information. For more information on how to connect your account, you can check out this article on start WhatsApp Web without QR code. You can scan a WhatsApp QR code to add someone’s contact information to WhatsApp .