There were two forms of Shikomi used by Ninja, the Gatana and the Zue. Both were effective tools used to conceal a sword. The Ninja were well known for hauling around an extensive arsenal, but sometimes that was not always possible. For instance, while walking around in broad daylight among the public, a Ninja could not carry his swords without drawing attention. Or could he?
Once the technology to create thinner blades that wouldn’t break so easily was learned, the Ninja embraced it with a new weapon that was the most ingeniously disguised sword ever made. The Shikomi-Gatana was the more common of the two. When carried around by a Ninja who wanted to appear as a traveler or monk, it resembled a walking staff. A common tool used by many people both wealthy and poor. Once threatened or attacked, the Ninja would reveal the true nature of the staff. In reality, the staff was a scabbard that held a thin bladed sword, which could easily be drawn from one end.
This caught more than one enemy by surprise as the Ninja would often begin the fight using the staff as if it was what it appeared to be, but instead of swatting at the swordsman, he would deflect his sword, moving to the side and drawing his own sword hidden in the staff. Ninja trained well at these types of maneuvers and often cut down an opponent before they realized the Ninja ever had a sword at all.