Lastly, users should seriously consider turning on 2-factor authentication for any service that supports it.
This is by no means an exclusively modern device of authentication, for these were known as early as the thirteenth century.
Even this authentication did not create implicit belief in the minds of those to whom it was addressed.
He had the certain pleasure of authentication and he was not the monopoly of having everything.
Wanting this, all our speculations are vain; but having its authentication they are definitive.
Their own authentication of their act finishes the business intrusted to them.
Such an authentication has been deemed necessary in a treatise of this kind.
Other agents went with money and waggon-loads of flour, which were their own authentication.
He wanted the tip to exhaust the subject of Death, and to leave him only the task of authentication.
What do they call it now—authentication charts, which is also a secret.
The verification of the identity of a person or process. In a communication system, authentication verifies that messages really come from their stated source, like the signature on a (paper) letter. The most common form of authentication is typing a user name (which may be widely known or easily guessable) and a corresponding password that is presumed to be known only to the individual being authenticated. Another form of authentication is biometrics.