An apparatus for executing a task includes an authenticator to identify a user, a controller that can receive data from the user, and an authorizer to ensure that the user has access to applications used to execute the task. The controller is able to register or de-register the applications and then determine which if the registered applications should be used to execute the task. The controller then converts the data from the user so that it can be used by the application to execute the task. If the user selects a second task to be executed, the controller can determine which of the registered applications is to be used to execute the second task. Methods for executing multiple tasks are also described.