High Quality Content by WIKIPEDIA articles! Advanced Card Systems Ltd (ACS) is a Hong Kong-based company founded by Denny Wong in 1995. It is a fully owned subsidiary of Advanced Card Systems Holdings Ltd. (SEHK: 8210), a publicly listed company in the Hong Kong Stock Exchange. ACS develops smart cards, smart card readers and related products, and distributes them to over one hundred countries. It was ranked by Frost & Sullivan as one of the world’s top 3 suppliers and Asia Pacific’s top supplier of PC-linked Smart Card Readers. In 2010, it was listed among Forbes Asia’s “Best Under a Billion", a prestigious list of 200 top-performing companies with sales between US$5 million and US$1 billion, selected from 12,930 publicly listed enterprises in Asia Pacific.