SECURITY DEVICES FOR SECURITY SUBSTRATES

摘要

The invention relates to a security device for security substrates, such as paper used for making security documents, such as banknotes, having anti-counterfeitable features. The invention therefore provides a security device comprising a carrier of at least partially light transmitting polymeric material. A carrier bears a plurality of first indicia which are easily visible to the human eye. The first indicia are defined by a plurality of smaller second indicia which are less visible to the human eye positioned relative to each other to enable the first indicia to be visualised.