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From: Cursitor Doom <cd999666@notformail.com>
Newsgroups: sci.electronics.design
Subject: Re: Exploding pagers
Date: Fri, 20 Sep 2024 16:57:47 -0000 (UTC)
Organization: A noiseless patient Spider
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On Fri, 20 Sep 2024 09:57:27 +0100, Liz Tuddenham wrote:

> Cursitor Doom <cd999666@notformail.com> wrote:
> 
>> On Wed, 18 Sep 2024 06:37:13 GMT, Jan Panteltje wrote:
>> 
>> > On a sunny day (Tue, 17 Sep 2024 15:39:17 -0700) it happened john
>> > larkin <jl@650pot.com> wrote in
>> > <rv0kejddm69cioik17oeujstlfig16jn4o@4ax.com>:
>> > 
>> >>On Tue, 17 Sep 2024 13:18:26 -0500, Crash Gordon <uucp@crashelex.com>
>> >>wrote:
>> >>
>> >>>Pagers, even with a cheap LiPo battery that fails, do not explode.
>> >>>Somebody built hundreds, maybe thousands, of intentionally
>> >>>booby-trapped pagers and then managed to distribute them to a large
>> >>>group of targeted individuals.
>> >>>
>> >>>This absolutely screams "state actor" but all of the states that
>> >>>would be capable of pulling it off have disavowed any connection, as
>> >>>would be expected.
>> >>>
>> >>>Posting is on-topic for s.e.d because these things had to be
>> >>>*designed*.
>> >>>  Targets can be expected to cross security boundaries so these
>> >>>  pagers
>> >>>had to look like normal pagers under X-ray, and had to not "smell"
>> >>>like explosives.  Putting aside, for sake of discussion, the horror
>> >>>of the device itself and the evil necessary to conceive and deploy
>> >>>it, one has to on some level, admire the skill required to manage
>> >>>it.
>> >>
>> >>It's assumed that the Israelis booby-trapped the batch of pagers that
>> >>were bought by Hezbollah. Fiendishly clever.
>> >>
>> >>I'm surprised that anybody still makes or uses pagers.
>> > 
>> > They used batteries filled with an explosive that would trigger when
>> > temperature rised above some point They could heat your smartphone
>> > battery by hacking or even some sucking website or email.
>> > So be carefull what batteries you use, same for the equipment you
>> > make. Simple heat up test in safety chamber would be a good idea?
>> 
>> Is there such an explosive? High explosives - as it appears were used
>> here - generally need a significant *shock* to set them off. Heat alone
>> isn't normally enough and even if it were, the temp required would have
>> necessitated the rapid discarding of the pager before it got
>> sufficiently hot.
> 
> They aren't restricted to just a single type of explosive.  There are
> detonators that can be set off by a very small increase in temperature
> and a few microgrammes of those would set off a bigger charge of
> something more powerful.

Well, maybe. But no one has yet *named* a practical explosive such as 
could be used in a pager which explodes when heated. I would like a 
specific named substance I can verify does that, because I simply cannot 
think of one and am consequently questioning whether one actually exists.

> 
> Other interesting information in the book "Winston Churchill's Toyshop"
> and that was the technology of 80 years ago.