I bought a $2,000 computer and was all ready and waiting for the delivery man because I knew it had signature confirmation. He left it on the doorstep, rang the bell and took off.
A week later they wouldn't deliver some $20 item that I didn't care if it got stolen or not because it had signature confirmation.
So basically... who knows lol
I ordered a pricey laptop and gave my workplace for delivery to be on the safe side, not wanting it left on the porch while I was at work. Eagerly following tracking until it showed the computer had been delivered, but me not seeing any evidence of it.
I called the seller, who told me it had been signed for, and even gave me the name of the signer...which I did not recognize.
Several days passed in puzzlement. On a hunch, I called the organization next door to my workplace and asked them if that person worked there. She did! But, she didn't bother to call me about the misdirected delivery. :-( I walked over there and collected my notebook in its identifiable shipping box. I think she was hoping it wouldn't be claimed by anyone.
So, in my case at least, ANYONE could sign for it, legitimately or not.