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Announcing a world first! Our amazing interdisciplinary team has virtually unfolded and read an unopened letter from 1697 without breaking its seal, and officially launched #letterlocking as a field of study in Nature Communications. nature.com/articles/s4146… #OA [going live today] 
Like countless historic letters, it was sent using letterlocking - the process of folding and securing a writing substrate to become its own envelope. Our virtual unfolding process shows how this letter has been locked while preserving the packet intact for future study. 2/?
The letter is from one Jacques Sennacques, trying to chase up a legal document related to a death. The letter was never delivered. Come on, be a voyeur. You are among the first to read it in 300 years.
