A TAN, or transaction authentication number, is a single-use password which is used as authentication in online banking and mobile banking in addition to a PIN.
Both the PIN and the TAN must be entered correctly for successful authentication.
In the so-called “mobile TAN method” (mTan or smsTAN), the TAN is sent to your mobile device via an automated SMS.
A TAN is usually made up of six digits.
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moneyland.ch is Switzerland’s independent online comparison service covering banking, insurance and telecom.
