SensoryBlox: Plug-and-Feel Modular Multi-Sensory User Interface for Immersive Cardboard VR

Paper Title

SensoryBlox: Plug-and-Feel Modular Multi-Sensory User Interface for Immersive Cardboard VR

Publication Info

• Topic area: Modular multi-sensory interfaces for low-cost VR environments
• Keywords: Modular design, multi-sensory feedback, cardboard VR, haptic interfaces, vibration, thermal feedback, airflow, olfactory feedback, immersive VR, user customization

Background and Problem

• Problem / challenge: Existing VR systems often lack integrated multi-sensory feedback, are rigid in configuration, and are inaccessible for low-cost setups like cardboard VR. Current solutions are typically uni-modal, require technical expertise for customization, and are designed for high-end VR platforms.
• Significance: Enhancing multi-sensory feedback in VR can improve immersion, realism, and emotional engagement, especially in resource-constrained or educational settings.
• Motivation and related work: Prior research on modular haptic systems and multi-sensory feedback has demonstrated their potential for immersive VR but remains limited by fixed configurations, high costs, and lack of user-driven customization. SensoryBlox addresses these gaps by enabling flexible, low-cost, and user-friendly multi-sensory interaction design.

Solution

• Proposed approach: SensoryBlox, a modular multi-sensory interface for cardboard VR, featuring vibration, thermal, airflow, and olfactory modules that can be reconfigured and customized in real-time through an intuitive in-VR interface.
• Novelty:
  1. Modular hardware-software system integrating four sensory modalities for low-cost VR.
  2. In-VR tools for module scanning, spatial tracking, and real-time customization of feedback patterns.
  3. Empirical characterization of user-driven sensory mappings and configurations.
  4. Design insights for accessible, scalable, and immersive multi-sensory interfaces.
• Procedure and key techniques:
  • Users assemble sensory modules into custom configurations using magnetic joints.
  • Modules are scanned and mapped into a virtual layout using a smartphone camera.
  • Multi-sensory feedback patterns are customized via an in-VR interface with graph-based timeline editors.
  • SensoryBlox supports real-time feedback synchronization and interaction in VR scenes.

Results

• Concrete findings:
  • Usability evaluation showed a mean SUS score of 75.3 (SD=6.0).
  • In a comparison study, SensoryBlox significantly outperformed a Bluetooth controller across seven user experience metrics (e.g., presence, sensory engagement, realism) with p < 0.001.
  • Participants created scene-specific configurations, selecting an average of 3.0 modules for gun shooting, 2.9 for fire sword, and 2.3 for forest trumpet scenarios.
• Advantage over baselines:
  • SensoryBlox achieved higher ratings in presence (5.67 vs. 2.42), sensory engagement (5.33 vs. 2.92), and satisfaction (5.5 vs. 3.33) compared to the baseline controller in the gun shooting scene.
  • Enhanced realism and immersion through spatially congruent multi-sensory feedback.
• Experiments / evaluation:
  • Two user studies: (1) usability evaluation with eight participants testing assembly, scanning, and customization; (2) comparison study with twelve participants evaluating SensoryBlox against a Bluetooth controller across three VR scenes.
  • Metrics included task completion times, SUS scores, Likert-scale ratings, and qualitative interviews.
• Limitations and future work:
  • Current I2C communication limits scalability; future work could explore wireless or SPI protocols.
  • Tracking relies on 2D camera-based detection, which could be enhanced with hybrid tracking methods.
  • Rigid cube shapes limit ergonomic possibilities; future designs may include curved or deformable modules.
  • Real-world deployment in educational or simulation contexts is needed to validate practical applicability.

Summary

SensoryBlox introduces a modular, multi-sensory interface for low-cost VR, integrating vibration, thermal, airflow, and olfactory feedback into customizable configurations. The system's plug-and-play design and in-VR customization tools enable users to create immersive, spatially congruent VR experiences. Usability studies demonstrated strong user engagement and significant improvements over baseline controllers in metrics like presence and sensory engagement. SensoryBlox offers a scalable, accessible platform for education, prototyping, and creative exploration, with potential for future enhancements in tracking, module design, and real-world deployment.