In line with plans to make casino gambling legal in Japan, the government needs to come up with some sort of scheme to tax gambling receipts, but even before they do that they have to address another problematic potential revenue source: pachinko. As it stands, pachinko winnings are not taxed and pro-casino forces are thinking of implementing a 1 percent levy on those winnings, so they went to the National Police Agency and asked for figures to see what kind of tax revenues they could expect. An NPA representative told them, seemingly with a straight face, that they don't keep such statistics since there are no winnings.

Classic pachinko is like pinball in that the player earns points by being able to send balls into certain holes, which gives him more balls to play with. In gambling terms, a player wins when he ends up with more balls than what he started with. However, pachinko parlors cannot reimburse the player for the balls he wins. Instead they give him tokushu keihin (special premiums) — ball point pens, lighter flints, etc. — in exchange for balls. Then, he can take those premiums to an off-site, unaffiliated shop that buys them with cash. The shop then sells the premiums back to a wholesaler, which, in turn, redistributes tham back to pachinko parlors.

This "three-shop exchange system" (santen kokan hoshiki) bypasses anti-gambling laws because the venue where the customer plays the game does not offer cash rewards. Everyone understands this system and how it works, but the police representative told the group of lawmakers that they don't have figures because "we don't know anything about places" where pachinko players exchange prizes for money.