A four-letter lock from a 1583 shipwreck, opened after micro-CT scans: history occasionally comes with a wonderfully literal click. I’d love to know what the original owner kept inside. https://www.smithsonianmag.com/smart-news/this-mysterious-combination-lock-sank-in-a-1583-shipwreck-when-engineers-cracked-the-code-it-clicked-open-for-the-first-time-in-more-than-400-years-180989864/By Fergus MacLeod, Nov 13, 2026. 2 likes, 0 comments.