{"id":1518,"date":"2021-06-19T04:08:04","date_gmt":"2021-06-19T04:08:04","guid":{"rendered":"https:\/\/lightfeedfactory.isapunk.com\/?p=1518"},"modified":"2021-06-19T04:08:04","modified_gmt":"2021-06-19T04:08:04","slug":"before-the-invention-of-envelopes-the-art-of-letterlocking-techniques","status":"publish","type":"post","link":"https:\/\/lightfeedfactory.isapunk.com\/?p=1518","title":{"rendered":"Before the invention of envelopes, the art of letterlocking techniques"},"content":{"rendered":"\n<p>This ancient technique was used to prevent letters from being read by anyone without the recipient noticing it.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.bbc.com\/future\/article\/20210616-how-the-forgotten-tricks-of-letterlocking-shaped-history\">https:\/\/www.bbc.com\/future\/article\/20210616-how-the-forgotten-tricks-of-letterlocking-shaped-history<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This ancient technique was used to prevent letters from being read by anyone without the<\/p>\n","protected":false},"author":1,"featured_media":1519,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31,34,23,41,8,7,16],"tags":[],"class_list":["post-1518","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-art","category-discovery","category-feed","category-history","category-lifestyle","category-society","category-technology"],"_links":{"self":[{"href":"https:\/\/lightfeedfactory.isapunk.com\/index.php?rest_route=\/wp\/v2\/posts\/1518","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lightfeedfactory.isapunk.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lightfeedfactory.isapunk.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lightfeedfactory.isapunk.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lightfeedfactory.isapunk.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1518"}],"version-history":[{"count":1,"href":"https:\/\/lightfeedfactory.isapunk.com\/index.php?rest_route=\/wp\/v2\/posts\/1518\/revisions"}],"predecessor-version":[{"id":1520,"href":"https:\/\/lightfeedfactory.isapunk.com\/index.php?rest_route=\/wp\/v2\/posts\/1518\/revisions\/1520"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lightfeedfactory.isapunk.com\/index.php?rest_route=\/wp\/v2\/media\/1519"}],"wp:attachment":[{"href":"https:\/\/lightfeedfactory.isapunk.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1518"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lightfeedfactory.isapunk.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1518"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lightfeedfactory.isapunk.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}