Advanced Card Systems (ACS) Advanced Card Systems (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, 2014, and 2015, it was listed among Forbes Asias “Best Under a Billion”, a prestigious list of 200 top-performing companies with sales between US$5 million and US$1 billion, selected from publicly listed enterprises in Asia Pacific.