11 Locks There is no padlock that you cannot open. However, this all depends on how skilled you are; therefore, you should always get hands-on practice.
Opening tools are designed to help you open the doors of the enemy house with ease. Therefore, of all the arts, this is the one conducted when you are closest to the enemy.
—Bansenshūkai, Ninki III 1
In ancient Japan, locks were simpler than the locking devices of today, as the manufacturing capabilities of the time could not produce the intricate pins, tumblers, and other components that contemporary locks use. However, these older locks were elegantly designed, making exemplary use of “prongs, latches, and the natural forces of gravity and tension” to keep people’s valuables safe from ...
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