Their bags crammed with shiny new electronic goods, the passengers on the battered North Korean ferry looked like any other tourists returning from a shopping trip in the malls of Tokyo.
But the PlayStations and other gadgets carried onto the Mangyongbong-92 ferry ended up not as children's gifts but as components in Pyongyang's military hardware.
Japanese officials said North Korean spies have trawled electronic retail outlets in Tokyo for many years as part of a covert operation to exploit their neighbor&'s technological know-how.
Seemingly innocent consumer goods, including games consoles and camera lenses, were openly carried out of the country to the communist regime, their components finding their way into missiles now aimed back at Japan.
Most of the cars driven by Pyongyang's leadership are Japanese cars (with the company markings cleverly removed). Much of this wealth and material is shipped back to North Korea on the Mangyongbong-92.