The invention involves an interactive system and method for selection and display of advertisements, product information and other information in programming that can be updated at any time by advertisers and accessed at any time by television viewers without requiring any more functionality from the user terminal than is currently required for interactive services. The mobile device control module executes application programs for the mobile device. Also described is processes for providing materials comprising the novel chromophores and polymer matrices containing the novel chromophores. The lead screw is threaded through the threaded member in the bridge and terminated at the bearing attached to the clamp member.