Standard Controller Dependency

Standard Controller Dependency in Virtual Reality describes a design framework that assumes a baseline level of physical and cognitive ability required to operate default hardware. Most mainstream VR systems are built upon a "bimanual assumption," which presumes that the user possesses two functional hands and the upper-body strength to manipulate controllers within a three-dimensional space for extended periods. This dependency creates an immediate barrier for individuals with a wide range of physical disabilities, as the hardware is rarely designed with the flexibility to accommodate diverse motor profiles or the integration of assistive technology.

Beyond simple hand presence, standard controllers often demand high levels of fine motor precision and complex input sequences, such as "chording" - the requirement to hold one button while simultaneously manipulating another. For users with neuromuscular conditions such as Cerebral Palsy, Muscular Dystrophy, or Hemiplegia, these requirements can make software entirely inaccessible. When a VR application's core mechanics are intrinsically tied to these specific physical actions, the technology fails to meet the needs of the neurodivergent and disabled population, effectively locking them out of immersive environments (Mott et al., 2020).

Addressing this dependency is critical for the development of inclusive educational and therapeutic tools. It requires a shift toward hardware-agnostic design, where software can be navigated through alternative inputs such as single-controller modes, gaze-tracking, or input remapping. By moving away from normative design assumptions, developers can ensure that the benefits of virtual reality - such as safe environment simulation and sensory-controlled learning - are available to all learners, regardless of their physical interaction styles (Gerling et al., 2020).

Standard Controller Dependency in Research

Gorrilla Arm Syndrome

(also referred to as Range of Motion and Fatigue)

Pococke, L., Jicol, C., Lutteroth, C. and Clarke, C., 2025, October. How accessible are virtual reality freehand gestures? Understanding barriers for users with upper limb motor impairments. In Proceedings of the 27th International ACM SIGACCESS Conference on Computers and Accessibility (pp. 1-18).

"Prolonged elevation is problematic in general, however our findings emphasise how this is particularly problematic for users with limited arm range of motion or for those experiencing pain in their shoulders, even for shorter usage periods"

Exclusion due to Standard Controller Dependency

Gerling, K., Hicks, K., Kalyn, M., Evans, A. and Linehan, C. (2020). ‘The Body as a Barrier: Understanding the Physical Demands of Virtual Reality’. Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems.
Mott, M., Tang, J., Kane, S., Cutrell, E. and Ringel Morris, M. (2020). ‘Accessible VRChat: Barriers and Opportunities for People with Disabilities in Social Virtual Reality’. Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems.