After further examination, you find out that hovering over the cart provides more information about what is in the cart which in this case is nothing , and it also includes a button to view the full shopping cart in case visitors want to view the contents of the cart at any time.
It makes the process quicker and easier than having to go to the Share-A-Cart website but both achieve the same result; sharing your Amazon cart with someone for them to make the purchase.
Once you have a Voice Code configured, the 4-digit code has to be spoken out to complete a purchase on your Alexa-enabled device.