WTF.. That's handy. Why are you breaking into bags in the first place? Unless your familiar with SOA132/c and your AFP I wouldn't be claiming that you can break into bags at the airport.
Don't need to be, behold my Legislative powers:
70A Power to search goods
(1) A quarantine officer may search and examine any goods which, or
which a quarantine officer believes on reasonable grounds:
(a) are about to be placed on, are on, or have been taken off or
out of, an overseas vessel; or
(b) are on, or are about to be placed on, a vessel or installation in
the Protected Zone or a Special Quarantine Zone that is about
to travel to a place in Australia; or
(c) are on, or have been taken off or out of, a vessel or
installation that has travelled to a place in Australia from or
through a place in the Protected Zone or a Special Quarantine
Zone.
(2) A quarantine officer may ask a person who owns, is carrying or is
otherwise associated with, or appears to the quarantine officer to be
associated with, goods that the quarantine officer is searching or
examining or entitled to search or examine under subsection (1)
any question in respect of the goods relating to matters within the
functions, duties or powers of the quarantine officer.
(3) A person is guilty of an offence if:
(a) the person is asked a question under subsection (2); and
(b) the person fails to answer the question.
Maximum penalty: 60 penalty units.
(4) A person is guilty of an offence if:
(a) the person answers a question asked under subsection (2);
and
(b) the answer contains a statement that the person knows to be
false or misleading in a material particular.
Maximum penalty: Imprisonment for 2 years.
(5) An offence against subsection (3) is an offence of strict liability.
Note: This section is subject to the privilege against self incrimination (see
subsection 79A(3)).
Basically it means if you are arriving in Australia and I have reason to believe you are carrying goods that may, by your own admission or not, be of harmful nature to Australia's Ecosystems, Community or People.