enigma1 - 12:32 pm on Oct 31, 2010 (gmt 0)
The carriers have many delivery options and I doubt eshops will bloat the checkout pages with various options. Fedex has signature confirmation and then another option adult signature required and then another option about insurance and other carriers may have different features documented (see appropriate spec). I just remember some of them, the last time I had to read the Fedex spec.
If the merchant starts displaying every one of these options it will likely create more confusion than anything else. If Fedex did not deliver the item to the right place then it is either their fault or if the address was incorrect upon purchase the buyer's fault.
However the item could be stolen regardless of signature confirmation, because I don't think the carrier's employee will ask for ID. So anyone could sign for it.
So in my opinion this is a case of theft by someone in your neighborhood and you should report it to the police.