Harder still because the system dates back hundreds of years to South Asia, where traders and merchants on the Indian subcontinent devised the system to avoid being robbed as they traveled.
This means the bonus rules will probably apply to subsidiaries of Barclays and Deutsche Bank in the US, Standard Chartered bankers working in Asia and Goldman Sachs traders based in London.
When the HKMEx started trading U.S. dollar-denominated gold futures on an electronic platform in 2011, it was seen as an attempt to attract Asia's commodity traders away from established bourses in Chicago and London.
There is a distinct difference in the sentiment toward gold, with those participants who use the futures market or exchange-traded funds selling, but physical traders buying, particularly in Asia.
The chief reason for the deteriorating situation today is the rising demand in Asia and the weak law enforcement against poachers and illegal ivory traders in central African countries like the Democratic Republic of Congo and the Central African Republic, Huijbregts said.