On 06/13/2017 06:57 AM, o1bigtenor via talk wrote:

    So to keep completely safe.
    1) remove the battery
    2) wrap it in aluminum foil
    3) wrap it in copper foil
    4) solder the edges.


Greetings

Why - - - I do believe that that would work - - - except then the
device isn't usable - - - shucks!!!

Many years ago, Microsoft claimed Windows NT had "Orange Book"
security.  Problem was, to meet that the computer couldn't be connected
to a network and removable media was prohibited.  ;-)
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And to add injury to insult, the machine only passed the "C" level exam, which is about equivalent to getting a C on a math exam.  I prefer at least a "B", and once ran an "A"-rated device (a blacker box Sun used to communicate with a merchant bank).

--dave

-- 
David Collier-Brown,         | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
davecb@spamcop.net           |                      -- Mark Twain