A method for authenticating a user to provide a service is provided. The method includes storing information associated with a user of a first device on a server. The stored information includes a phone number associated with a second device of the user and is stored during an event. Additional information is needed to authenticate the first device to provide a service. The method includes querying the user for additional information to authenticate the first device to provide the service and querying the user to verify the phone number provided during the event before sending one or more communications associated with providing the service to the first device. The method includes sending, based on the stored information and the additional information the one or more communications to provide the service.