Jumpin jacks - hopping roos in Aussie passport.

Australia has unveiled a new passport with floating images of kangaroos that appear to hop up and down making it virtually impossible for criminals to fake, the government says. Launching the passport on Thursday, Foreign Minister Alexander Downer said it will be "the most secure Australian passport ever produced." The kangaroos appear to hop up and down when the page is moved backwards and forwards, and my department thinks that that is a very nice touch," Downer said.
via BoingBoing