An apparatus including a receiver and an extractor is provided for determining a physiological parameter of a living being. A polymer is dissolved in an organic solvent to prepare a polymer solution of high viscosity. The capacity of the link connected to a host may be measured through active probing with the hosts time-stamping each probing packet after receiving it. If silent acquisition fails, the rendering application hosts a browser, causes the browser to navigate to a license server, allows a user to communicate with the license server by way of the hosted browser to acquire the license, and shuts down the hosted browser upon reception of the license from the license server.