The Telephone with Dial Tone and associated Busy Signal.  A busy signal meant nobody could contact me;  Also, by either not answering the phone or by simply taking the receiver off the hook I controlled interruptions.  And, nobody became concerned if they did not hear from me in an hour, 1&#x2F;2 day, day or even week.  And I had no concern if I did not hear from others either in that timeframe.<p>So the &quot;tool&quot; to maintain privacy was very controllable by me and nobody would think otherwise.<p>Any Norton product
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