2015-10-30#

Transaction Authentication Numbers#

A transaction authentication number (TAN) is used by some online banking services as a form of single use one-time passwords to authorize financial transactions. 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.

More Information#

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« This page (revision-2) was last changed on 30-Oct-2015 12:05 by jim