Old Codger said:BS!
I signed for a parcel 2 days ago, addressed to my name and address.
He asked me to confirm my name and address, and i signed the doodad with his stylus.
He was riding a yellow motor bike!
OC
You can address the parcel to anyone you like, but you can't restrict acceptance of the parcel to the addressee only. Apparently, anyone at that address, who can produce evidence that they live there, can sign. So your druggo mate, can accept your package of silver, high-tail it to Cashie's and be off his head before you know it, and it's not Australia Post's problem. If you paid for the item through PayPal, you can claim it wasn't delivered to you, and do a chargeback.
So if I want to send you a $k's worth of silver, according to AusPost, I can't specify that only you can sign for it. What I want to know, is there some way around this, or do businesses just take the chance of the vast majority of people being honest and build the losses into the cost of sales? For example, Perth Bullion use PayPal, what's to stop me from buying a goodly amount, paying through PayPal, and then leaving the missus (our last names are not the same, so that's hard for a sender to prove a relationship) to sign for it? Not me! you didn't deliver it to me!