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1. (WO2018100203) TWO SECURITY FEATURES THAT TOGETHER FORM A THIRD SECURITY FEATURE

Pub. No.:    WO/2018/100203    International Application No.:    PCT/EP2017/081336
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Tue Dec 05 00:59:59 CET 2017
IPC: B42D 25/20
B42D 25/378
B42D 25/382
B42D 25/387
B42D 25/373
Applicants: BANQUE DE FRANCE
Inventors: BEAUCHET, Frédéric
BLANC, Michel
Title: TWO SECURITY FEATURES THAT TOGETHER FORM A THIRD SECURITY FEATURE
Abstract:
The invention concerns a set of N security features (105, 106, 110), each security feature forming, alone, an authentication feature different to those formed by the other security features, the different security features being shaped such that, when the N security features are superimposed, they together form an N+1th authentication feature (112) unrelated to the N other authentication features (107, 108, 111) each formed respectively by one of the N security features.