Transaction authentication number: Difference between revisions

Revision as of 14:55, 27 October 2018

Revision as of 14:55, 27 October 2018

Line 1:

A '''transaction authentication number''' 0672084415('''TAN''') is used by some [[online banking]] services as a form of ''single use'' [[one-time password]]s to authorize [[financial transaction]]s. TANs are a second layer of security above and beyond the traditional single-password [[authentication]].

TANs provide additional security because they act as a form of [[two-factor authentication]]. Should the physical document or token containing the TANs be stolen, it will be of little use without the password; conversely, if the login data are obtained, no transactions can be performed without a valid TAN.