"New HK$1,000 banknote raises the 'bar' on security" from South China Morning Post

"Officials say it will be inserted at a cost, but will make the bills more difficult to copy. The device has been used for the first time this year in some Pacific Ocean islands and African countries. The mainland has also used it on commemorative notes, but no Western countries have so far used the technology.


Hong Kong Note Printing Limited general manager Francis Lau said: "Not many have adopted this feature because it's new. Special machines and inks are required and than can add to costs."