Science
Rare ‘locked’ letter sealed 300 years ago is finally opened virtually – nation.lk – The Nation Newspaper
Three hundred years ago, before envelopes, passwords and security codes, writers often struggled to keep thoughts, cares and dreams expressed in their letters private….
Three hundred years ago, before envelopes, passwords and security codes, writers often struggled to keep thoughts, cares and dreams expressed in their letters private.
One popular way was to use a technique called letter locking — intricately folding a flat sheet of paper to become its own envelope. This security strategy presented a challenge when 577 locked letters delivered to The Hague in the Netherlands between 1689 and 1706 were found in a trunk of undelivered mail.
The letters hadnever reached…
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