A metal detectorist in Germany has discovered a 1,600-year-old miniature gold lock that's one of a kind. An analysis of the tiny lock with CT scans revealed the artifact's inner workings, showcasing ...

Abstract: A band-style lock-unlock mechanism for space-arms was proposed to assure locking of space-arms reliably. To light down mass of the whole mechanism, a centralized lock-unlock scheme was ...

How do you open an old locked chest when you don't have a key? Breaking the chest would work, of course, but that isn't an option if the chest is a valued historic artefact. So when curators at a ...