Pin and Ward: An Encyclopedia of Locks

Field notes

Pin and Ward is structured as a browsable reference rather than a chronological blog. Its homepage divides the subject into historical mechanisms, mainstream lock types, specialty hardware, electronic access systems, inventor biographies, locksmithing practice, and an A–Z glossary. The visible index names 73 articles or biographies across its main sections, while the timeline connects Egyptian wooden pin tumblers, Roman warded locks, Yale’s nineteenth-century patents, and present-day smart-lock systems.