Brazil's Central Bank has unveiled new banknotes with superior print quality and new security features to prevent counterfeiting.
The new bills unveiled Wednesday are in denominations of 2, 5, 10, 20, 50 and 100 reais, Xinhua reported.
The new notes have different sizes and notches so that they can be easily identified by touch.
Central Bank governor Henrique Meirelles said technological upgrading is needed to make counterfeiting more difficult.
New notes of 50 and 100 reais will start circulating in the first half of 2010, while those of lesser face value will be phased in by 2012.
Those currently in circulation remain valid until complete replacement, so people do not need to rush for new notes, said Meirelles.