Ninja techniques, often referred to as ninjutsu, encompass a variety of skills and strategies used by ninjas in feudal Japan. These techniques include stealth, espionage, and unconventional warfare, allowing ninjas to gather intelligence and execute missions without being detected. Additionally, ninja techniques involve physical training in martial arts, weaponry, and survival skills. Practitioners learn to use tools like shurikens and smoke bombs, enhancing their ability to evade capture and navigate diverse environments. Overall, these techniques emphasize agility, adaptability, and resourcefulness in achieving objectives.