Abstract: A method for managing incoming voice calls, the method comprising: receiving audio of a voice call; determining whether the audio of the voice call is computer-generated; and terminating the voice call if it is determined that the audio of the voice call is computer-generated.

Abstract: A method for authenticating a transaction is disclosed. The method comprises the steps of: receiving data identifying a region where a transaction is being requested; receiving data identifying a mobile communication device associated with a person requesting the transaction; determining from Location Register (LR) data for the mobile communication device data identifying a region where the mobile communication device is located; comparing the data identifying the region where the transaction is being requested with the data identifying the region where the mobile communication device is located; and authenticating the transaction in dependence on the result of the comparison.

Abstract: An authentication method. The method comprises comparing user voice data received via an electronic device to a stored voice template to determine a voice authentication parameter. A voice authentication threshold is determined and the voice authentication parameter is compared to the voice authentication threshold to determine whether to authenticate the user. Determining the voice authentication threshold comprises determining a current value of an enrollment counter, then comparing the current value of the enrollment counter to an enrollment counter threshold and determining whether the stored voice template is fully enrolled according to the result. If the stored voice template is fully enrolled, the voice authentication threshold is set to a first voice authentication threshold. If the stored voice template is not fully enrolled then a device attribute received from the electronic device is compared to a stored device attribute.