a.k.a. authenticate, two-factor authentication

The step of determining the identity of the requesting client, such as comparing user identification and a password to a customer file. Basically it is a security measure or "technique" by which access to Internet or intranet resources requires the user to enter a username and password. Client/server networks (such as Windows NT) and some Web sites require your identity to be authenticated before you can access any files. Authentication ensures that the person at the other end of a digital connection is the approved user.

NetLingo Classification: Net Technology