If you chose to insure your delivery with Shipping Protection, Direct Signature will be required.
If you think you may not be home to receive and sign for your package, all you need to do is sign up to use FedEx's Delivery Manager® and that will give you the option to have your package delivered to a nearby location instead of your porch.
For more information Open Fedex Delivery Manager.
It's free, and easy to use.