Authorization method in data transfer systems

The invention relates to a method and a device for authorization in data transmission systems using a transaction number (TAN) or a comparable password, wherein the user in a 1st step via a data input device his identification and / or an identification code of the data input device together with the request for generating or selecting a TAN or a comparable password sends from a file to an authorization computer, in a second step the authorization computer generates the TAN or the comparable password or selects from a file, in a third step the authorization computer the TAN or the transmits a comparable password over a different transmission path than in step 1 to a receiver (eg cell phone or pager) in a 4.Step the user accepts this TAN or the equivalent password from the recipient and enters into the data input device,in a fifth step this TAN or the equivalent password is sent back to the authorization computer, in a sixth step of the authorization calculator the validity of the TAN or checks in order to then establish or release a connection between the data input device and a receiving unit in a seventh step.Step to establish or unlock a connection between the data input device and a receiving unit.Step to establish or unlock a connection between the data input device and a receiving unit.Step to establish or unlock a connection between the data input device and a receiving unit.Step to establish or unlock a connection between the data input device and a receiving unit.