Up until the scheme was thwarted by cutting-edge investigative work, ruthless bikie gangs recruited housewives and the unemployed to launder drug money through pokie machines.
Drug traffickers employed the money-laundering mules to deposit filthy money into pokie machines in neighborhood bars, but they never used the machines themselves.
Instead, the mules would instruct the machine to print out a ticket detailing their credit balance, which they would then present to the cashier to receive their payment.
The technique, which enables the money to be cleaned and reported as gaming wins, is well-established and practically failsafe. It has been in operation for years.