One or more systems and methods are disclosed to provide secure transmission of signals by a primary wireless communication device that utilizes a secure multi-tier signal encryption mechanism. Also disclosed are methods of diagnosing cardiovascular disease, kidney disease, lung disease and hypertension by measuring ACE2 expression or nucleotide polymorphism analysis. The router contains no logic regarding the web-user interface running on the client device. In a third aspect, ITP is employed to confine at least one reactant of a chemical reaction to an ITP zone, and at least one reactant of the chemical reaction is delivered to the ITP zone in two or more discrete doses. When implemented for an ATSC or ATSC-MH mobile TV standard signal, the compressed sensing channel estimation algorithm enables data reception in Delay and Doppler spread conditions beyond the capabilities of conventional channel estimation methods. The method further comprises associating a first vaulting policy of the plurality to a first set of media and associating a second vaulting policy of the plurality to a second set of media, the second set of media comprising a subset of the first set of media, the second vaulting policy superseding the first vaulting policy for the media contained in the subset.