I had two seperate deliveries on the same day and FedEx lost both items. They claimed to have left the items on my back door, however I don't have a back door.
The week before the lost packages I had another package brought to me from my neighbor down the street. She said FedEx had left it on her porch. I had to put a claim in and the drivers had to check into it.
My packages were never found and I was reimbursed for only 1 package. They don't require signature and I will not use them again.