UX Principles for designing Virtual Reality

1. Everything Should Be Reactive (모든 것이 반응하도록 하라!)
Every interactive object should respond to any casual movement. For example, if something is a button, any casual touch should provoke movement, even if that movement does not result in the button being fully pushed. When this happens, the haptic response of the object coincides with a mental model, allowing people to move their muscles to interact with objects. When designing a button: use a shadow from the hand to indicate where the user’s hand is in relation to button, create a glow from the button that can be reflected on the hand to help understand the relationship, use sound to indicate when the button has been pressed (“click”)

2. Restrict Motions to Interaction (불필요한 동작을 유인하지마라!!)
The display should respond to the user’s movements at all times, without exception. Even in menus, when the game is paused, or during cut scenes, users should be able to look around. Avoiding Simulator Sickness and slowness is the key part of improving the UX in Virtual Reality Applications. Do not instigate any movement without user input. Reduce neck strain with experiences that reward a significant degree of looking around. Try to restrict movement in the periphery.

3. Text and Image Legibility (텍스트와 이미지는 가독성을 좋게하라!)
Bigger, brighter and bold texts should be used to indicate widgets. Images should be realistic and appealing to the user. The mind of the user is going to be entirely mapped into the virtual reality for a prolonged amount of time. Texts should be readable and legible for unstrained viewing of the user. Brighter and vivid the colors are, more involved the users will be.

4. Ergonomics (인체공학적으로 구성하라!)
Designing based on how the human body works is an essential to bringing any new interface to life. Our bodies tend to move in arcs, rather than straight lines, so it’s important to compensate by allowing for arcs in 3D space

5. Sound Effects (소리를 최대한 활용하라!)
Sound is an essential aspect of truly immersive VR. Combined with hand tracking and visual feedback, it can be used to create the “illusion” of tactile sensation. It can also be very effective in communicating the success or failure of interactions.

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