New Zealand customs believe we'll all soon be 3d printing gold, gems, drugs in our living rooms

In a bid to outdo the TSA on stupidity, New Zealand customs has released a report stating they believe that next on the printing list is gold, gems and drugs, how are they going to protect NZ's borders from nefarious tech-heads bringing 3d object files through customs? I guess they forgot email exists.

printing gold, gems, drugs