One or more computing devices, systems, and/or methods for user identification and authorization are provided. In an example, a voice command to perform an action is detected. A voice profile associated with a user is identified based upon voice characteristics of the voice command. In response to determining that the voice profile is not linked to an account associated with the action, the user is prompted for an identifier associated with a device for creating the account through the device. In response to receiving the identifier from the user, the identifier is utilized to facilitate creation of the account through the device.