AUTHENTICATION TAG, DEVICE, SYSTEM AND METHODs

The system discloses an authentication system of objects, physical comprising an authen- tication mark and, as an option, an authentication mes- sage, generated by an authentication device and con- trolled by a decoding device in combination with an authentication server managed by an authenti- cating authority. The authentication mark in the tag may comprise GNSS RF raw signals and/or GNSS raw data. The authentication mark comprises data and may be formatted,a QRCode tag. The authentication server is configured to cause a GNSS sig- nals simulator to reproduce the GNSS RF raw signals and/or GNSS raw data at the location and time interval of production of the object and to compare the results of the simulation to the authentication mark comprising data received directly from the authentication device or re- ceived from a verification device and issue a validation, a denial or a doubt from the comparison.