November 2008
Intermediate to advanced
192 pages
8h 32m
English
Content preview from Make: Technology on Your Time Volume 16
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DEAD DROP DEVICE
A HOLLOW BOLT HIDES SECRET MESSAGES.
DEAD BOLT: Who would think this hardware is threaded with conversation?
Photograph by Garry McLeod
When spies need to pass off a note or microfilm without meeting in person, they sometimes use a “dead drop” device. An effective dead drop device looks common enough to blend in without causing suspicion under the casual glances of passersby. This bolt is one such item.
It’s made from an ordinary steel bolt that’s hollowed out and fitted with a threaded, removable head. If made to ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.