It is apparently the case that a license was required to carry a cane in London during the 18th century, possibly because of the use as a weapon, in essence a fighting stick. Sword Canes and stick swords evolved out of this as a hidden weapon for carry.
A particular type of walking stick was created, called a Stick Sword. This concealed a blade within the stem, which can be made to appear from a cane so as to convert it into a (normally hidden) weapon. Today, sword sticks are called Sword Canes. Sword canes are great for those who are impaired or just want to “dress up” while still having the protection of a hidden sword.
Also known as a zatoichi or shikomizue in Japanese, stick Swords were common in Japan when the government outlawed the carry of Swords. We also have a variety of walking sticks and canes.