As for the future, Octopus is optimistic that a cashless society will spread to other areas, particularly in its own patch of the Asia-Pacific area.
"You know I buy my lunch with my Octopus. I pay for drinks on Octopus. I buy coffee with my Octopus," said Goldmintz.
"So I think there will be day when both Hong Kong and other cities around Asia-Pacific particularly will be looking towards a cashless society," he said. "I think we're going to make huge in-roads in the next five to ten years in this.