You can scan a WhatApp QR code or use your phone number to link a new device to your account. Only link on WhatsApp Web, WhatsApp for Windows and Mac, WhatsApp Android Tablets, WhatsApp companion phones, or AI glasses. Linking your device through unofficial apps or websites may put your account at risk. This guide will help you understand how to implement WhatsApp Login for WhatsApp Web. Want to use WhatsApp Web but don’t have your phone with you? — Accessing WhatsApp Web without your phone can seem impossible at first, as you needed your phone to stay connected to WhatsApp Web for syncing messages. To begin linking a companion device using your phone number, open Whatsapp for Windows or WhatsApp Web on the device you want to link.