If you’ve purchased a new device or want to connect an older one, you can easily add devices to your account. Fortunately, Amazon doesn’t limit the number of devices you can connect. To learn how to do this, follow these steps: 1. Using the new device, log in to your Amazon account. 2. Depending on which security settings you’ve previously selected, you may have to confirm your identity by utilizing a security code. The process is a little more complex if you’re trying to register Smart TV. You’ll need to use a PC or a Mac, which will require obtaining a six-digit code from your TV. Consult your TV’s documentation for specifics.