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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