Design Case study
Voice Assisted Billing Interface (VABI)
Multi-modal interface for Kirana shopkeepers
by
Case Study - Slide Show
Design process that was followed in this project:
• Introduction and Background
• Related Work and Opportunities
• Primary Research
- User Studies
- Findings and Insights
- Inventory Management
- Account Handling
- Calculation of Bills
- Time Management
• Design Goals and Scope
• System Design Considerations
- System Modalities
- Approaches to the design of the System
- Hardware setup required for the VABI
• Voice UI Design
- Conversational Voice Assistant vs a Set-Command based VUI
- Control of operation
- Disambiguation
- Dialogue sketches for different scenarios
- Detail and Speed of Feedback provided by the VUI
- Confirmations
- Handling of errors
- Interruptions
• Screen UI Design
- Disambiguation
- Control of operation
- Touch Interactions
- Error Correction
- Privacy
- Information Architechture of the VABI
• Design Explorations
- Version 1
- Version 2
- Version 3
- Finalising a design
• Quantitative Longitudinal Study
- The first round of study
- The second round of study
- Control
- Participants
- Qualitative Feedback and SUS score
• Result
- Speed and Learning
- Errors in Recognition
- Qualitative Findings
• Conclusion and Future Work
• References
• Appendices
- Appendix A (Samples of Manual Bills collected during the Study)
- Appendix B (The four shopping lists used while testing)
- Appendix C (Misrecognition errors encountered in voice-commands)
- Appendix D (Edit distances and accuracy rates)
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