US Patent 11775628 Multi factor authentication using different devices

Customizing an application on a mobile device includes storing at least a portion of customization data in a customization server that is independent of the mobile device, a user of the mobile device accessing the customization server independently of the mobile device, receiving authorization data from the customization server that enables the mobile device to securely receive customization data from the customization server, and the mobile device using the authorization data to cause the customization server to provide the customization data to the mobile device. The authorization data may be provided by postal message, email message, an SMS text message, and/or a visual code provided on a screen of a computer used to access the customization server. The user may use a computer to provide credential information to access the customization server. Customizing the application may allow the mobile device to access a user service on behalf of the user.