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Authentication (Noun)

A mark on an article of trade to indicate its origin and authenticity.

Nouns denoting communicative processes and contents.

The logo on the designer handbag serves as an authentication, verifying the brand's trademark and guaranteeing its legitimacy.
The serial number on the watch is an authentication that it was crafted by the original manufacturer.
To counter fake merchandise, the company includes an authentication on the packaging of all its licensed products.
The certification on the artwork is an authentication, certifying that it was created by the renowned artist.
The hologram sticker on the DVD is an authentication that it is a genuine copy and not a pirated edition.