Authentication SMS Module ######################### The `SMS <https://en.wikipedia.org/wiki/Short_Message_Service>`_ authentication module allows to authenticate users via SMS. There are two authentication methods `sms` and `password_sms` which can be used in the `authentications` list of the `session` section in the configuration. The `sms` method just send a code via SMS to the user. Then the user needs to transcribe the code into the login dialog. The `password_sms` method send a code only after the user entered a valid password. This provides a `two-factor authentication <https://en.wikipedia.org/wiki/Two-factor_authentication>`_ method. Both methods require that the user has a *Mobile* phone number defined otherwise he can not be authenticated with those methods. Configuration ************* The configuration of the module is set in the `authentication_sms` section. function -------- The fully qualified name of the method to send SMS. It must take three arguments: text, to and from. This method is required to send SMS. from ---- The number from which the SMS are sent. length ------ The length of the generated code. Default: 6 ttl --- The time to live for the generated codes in seconds. Default: 300 name ---- The name used in the SMS text. Default: Tryton