Confidence in a currency rests on two main assumptions: first, that it will retain its value in relation to other currencies and articles of daily necessity; and secondly, that the coins and banknotes that form its most tangible manifestations are secure from forgery. This web-version of Money in Hong Kong - A Brief Introduction, combining materials from summer exhibitions presented by the HKMA in 2000 and 2001, addresses both of these subjects. We explain how, under the Linked Exchange Rate system, the external value of the Hong Kong dollar is kept at a stable level. We also focus in particular on the security features that have been added to Hong Kong's banknotes over the years to deter counterfeiting. In addition to the focus on currency, we include a brief survey of Hong Kong's monetary and banking systems from the early years to the present, so our readers can understand the current work of the HKMA against a historical perspective. Our aim in presenting these materials is to promote a greater understanding of how money works in Hong Kong and the work of the HKMA. We hope you enjoy reading them. October 2001