Bank outlines new security measures during briefing on counterfeit notes Real or fake? This is the question that will be asked more often in Hong Kong as the yuan becomes a commonly accepted currency. While Chinese money is still not yet legal tender in Hong Kong, it is being accepted daily by local retailers and restaurants as mainland visitors flood popular tourist areas. Shopkeepers already know how to identify fake Hong Kong and US dollar notes of different denominations and now need to recognise counterfeit yuan. A team of three executives from the Bank of China Shenzhen branch held a seminar in Hong Kong yesterday to teach about 200 of the bank's customers how to spot the fakes. Mai Xuemei, from the bank's retail department cash management section, said a number of advanced security features had been added to the latest series of yuan notes. The features include: The colour of the denomination numeral shifts between green and blue when the 100 yuan note (and gold to green for the 50 yuan note) is viewed at different angles; A machine-readable barcode is visible under ultraviolet light; An embedded metal thread shows the value of a note when it is held at an angle; Watermarks of portraits enable easy recognition. Other security features include concealed image and denomination, fluorescent fibres and see-through features. Ms Mai said fake yuan notes were usually not as bright in colour as the real ones and the printing on them was relatively uneven and blurred. Fake notes also had a smooth surface while real ones were rough, she said. 'If you know the anti-counterfeiting features of yuan notes, it is very easy to recognise if they are real or not.' Most fakes were currently produced by printing machines or advanced copiers, she said, adding there were relatively few in circulation. However, she warned that counterfeiters were using advanced technology to forge notes.