T.F.
Yep, we run our company from home and routinely have samples delivered via FedEx.
Funny story... One customer sent a sample ( plastic pellets, talc) in a box which appeared to be an HP computer box.
Sample gone but the person who got it has no idea what the pellets and powder are. Probably scared the poop out of them when they opened it! Lol
We didn't pursue, we just laughed it it off.
If we have a critical sample coming in... Someone is here to sign or its scheduled for pickup at our local station.
ETA: We do have cameras installed for day and night watch.