n. something which validates or confirms the authenticity of something
n. proof of the identity of a user logging on to some network
n. a hallmark or assay-mark on a piece of metalwork
the GNU version of the Collaborative International Dictionary of English
n. a mark on an article of trade to indicate its origin and authenticity.
n. validating the authenticity of something or someone.
The Century Dictionary and Cyclopedia
n. The act of authenticating, verifying, or establishing the authoritativeness, genuineness, validity, credibility, or truth of anything; specifically, in law, the official attestation of a written instrument.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a mark on an article of trade to indicate its origin and authenticity
n. validating the authenticity of something or someone