To obtain your Xfinity activation code, begin by setting up your Xfinity account either online or through the Xfinity app. Once logged in, navigate to the activation section, typically found under "My Account" or "Services." Follow the prompts to select the device or service you're activating www.xfinity.com/authorize will then generate an activation code for you, which may be displayed on your screen or sent to you via email or text message. Enter this code when prompted on your device or during the setup process. Once entered correctly, your device or service should be activated and ready to use with Xfinity.