Automatic interoperation functionality for legacy POS service and control objects is provided. In response to a request for creating an instance for a control object that implements an interface for the POS device, a legacy interoperability subsystem determines a unique identifier associated with the...http://www.google.com/patents/US20070050751?utm_source=gb-gplus-sharePatent US20070050751 - Automatic interoperation with legacy POS service and control objects