Re: End of the War
Search warrants often, possibly in most cases, expose things not relevant to an investigation or the purpose of the warrant. The law has been dealing with that issue, on a much smaller scale to be sure, for centuries. A frequent case would be search of a house occupied by a number of people, of which only some are targets of investigation, where the police may not search beyond the warrant limits (although they may be able to act based on something "in plain sight" that indicates a law violation). Much the same would be true of the information scanned by a Stingray (if it does not automatically filter out untargeted communications).