Help Supporters: Exploring the Design Space of Assistive Technologies to Support Face-to-Face Help Between Blind and Sighted Strangers

Document Title

Help Supporters: Exploring the Design Space of Assistive Technologies to Support Face-to-Face Help Between Blind and Sighted Strangers

Document Information

• Domain: Accessibility Technology, Human-Computer Interaction
• Keywords: Mixed abilities, social collaboration, community intervention, design research, blind-sighted collaboration, assistive technology, cross-cultural understanding, social tolerance

Research Background and Issues

• Problems and Challenges:

  • Blind and low-vision (BLV) individuals face numerous challenges when seeking help in public environments, including difficulty finding volunteers, social pressure or embarrassment in requesting help, and the lack of experience among sighted individuals in interacting with BLV individuals.
  • Existing assistive platforms (e.g., BeMyEyes) are effective for remote assistance but fail to adequately address barriers in face-to-face help scenarios.

• Significance:

  • Addressing these social barriers is crucial for enhancing the social participation, autonomy, and psychological safety of BLV individuals.
  • The potential of automated technologies should not only focus on supporting BLV users but also assist sighted individuals in building awareness and appropriate interaction habits with BLV individuals.

• Research Motivation and Related Work:

  • The authors introduce “Community Adaptation Theory”, which suggests that technology should provide tools for non-disabled individuals to better support disabled individuals.
  • Interdependence Framework proposes combining assistive technologies, people, and the surrounding environment to collaboratively create inclusive environments.
  • Existing work primarily focuses on remote support, leaving a significant gap in research on face-to-face collaboration between BLV individuals and strangers.

Solution

• Proposed Solution:

  • Design a "Help Supporters" system to facilitate collaboration between BLV users and sighted strangers.
  • Divide the help process into two stages:
    • Connection Stage: Help BLV users find sighted individuals willing to offer assistance.
    • Collaboration Stage: Provide real-time information prompts to help sighted individuals assist effectively and appropriately.

• Innovation:

  • Proposed context-adaptive "Help Supporters" prototypes, including Person-Finder Glasses, Volunteer Platform, Pictorial Display, and Vague Directions Flagger.
  • Position technology as a medium for fostering social connections and educating sighted individuals, rather than solely supporting BLV users.

• Implementation Steps and Key Technologies:

  • Multi-ability collaborative design process, co-designing six key design attributes, and ultimately developing four representative prototypes.
  • Includes computer vision-based user localization with audio feedback, a mobile app interaction platform built with React JS, and real-time feedback devices with pictorial interfaces.

Research Outcomes

• Specific Outcomes:

  • User studies with 20 mixed-ability participants revealed that the volunteer platform alleviated social pressure for both parties compared to direct face-to-face requests, increasing willingness to help.
  • BLV individuals preferred volunteers familiar with assisting BLV users and valued background information such as gender and availability.
  • Real-time guidance provided by Help Supporters during the collaboration stage (e.g., language corrections, behavioral prompts) significantly improved the quality of assistance from sighted individuals.
  • Feedback validation and visualized guidance (e.g., illustrations, digital markers) were highly effective in enhancing user learning and empathy.

• Comparison with Existing Solutions:

  • The volunteer platform's "present but implicit" connection method excelled in alleviating social pressure and building trust.
  • During the collaboration stage, systems employing non-intrusive and timely feedback technologies demonstrated higher social tolerance, avoiding unnecessary discomfort.

• Experimental or Evaluation Results:

  • The study found that collaboration facilitated by tool intervention was more welcomed by both BLV and sighted groups, particularly in designs balancing information openness and privacy.
  • Users generally expressed dependency on the technology, but system intervention reduced opportunities for BLV individuals to express themselves autonomously, highlighting the need for further privacy considerations.

• Limitations and Future Directions:

  • Experiments were conducted in controlled environments over a short period, failing to reflect real user behaviors in long-term and complex settings.
  • Participant backgrounds were primarily from U.S. urban areas and university populations, potentially limiting the generalizability of results.
  • Future research should explore the balance between maintaining BLV autonomy and enhancing social trust, improve privacy-enhancing designs, and extend studies to broader community demographics.