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I have problems with the require destruction of records daily clause. Seems to me they are making it legally impossible to prove they used it against you. "we don't keep records" , why? "It's the law, pick up that can citizen, and move along nothing to see here".
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Whether the records are destroyed or are retained, no one will ever get access to them to use as evidence that the device was used.
That is the point of dismissing cases in the rare instances where the court orders the government to make the information available to the defendant.
That is the point of training government agents to lie to the courts about the sources of information, a/k/a "parallel construction".
That is the point of having one agent provide information to the agents who may appear in court without divulging the true source of the information, which is another tactic.