Revision: Object Data Interaction Techniques — System Control

1. 📌 Essentials

• System control involves applying commands change system states or interaction modes.
• Selection always requires choosing an element from a set.
• Control techniques include graphical menus, voice commands, gestures, tools, and hybrid methods.
• Design principles emphasize preserving action flow, spatial referencing, multimodal input, and feedback.
• Evaluation is critical; improper application impairs system performance.
• Graphical menus can be 2D or 3D, placed in various spatial frames.
• Voice control is hands-free, relying on commands and auditory feedback.
• Gestures/postures serve as initiation and command, often needing feedback.
• Tools can be physical or virtual, communicating functions via form.
• Hybrid controls combine modalities for efficiency and robustness.

2. 🧩 Key Structures & Components