Interaction techniques refer to the methods used to facilitate communication between users and systems, such as computers or mobile devices. These techniques can include gestures, voice commands, touch inputs, and keyboard shortcuts, allowing users to perform tasks efficiently and intuitively. Different interaction techniques are designed to enhance user experience by making technology more accessible and responsive. For example, touchscreens enable direct manipulation of on-screen elements, while voice recognition allows hands-free operation. Understanding these techniques helps designers create more user-friendly interfaces that cater to diverse user needs.