Explore/agent app/Conversational Tactile Data Interfaces: Co-Designing Accessible Data Experiences with Blind Users Using Refreshable Tactile Displays and Conversational AI
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Samuel Reinders, Munazza Zaib, Bongshin Lee, Ingrid Zukerman, Matthew Butler, Thien Autran, Sascha Cowley, Francois Jacobs, Lizhen Qu, Kim Marriott/Conversational Tactile Data Interfaces: Co-Designing Accessible Data Experiences with Blind Users Using Refreshable Tactile Displays and Conversational AIUnknown

Combining refreshable tactile displays (RTDs) with conversational AI offers a promising approach to accessible data visualization for people who are blind or have low vision (BLV). However, it remains an open question how these modalities should be integrated to support accessible data experiences. We address this through a co-design process with three BLV co-designers. Building on our prior Wizard-of-Oz study, we created a conversational tactile data interface (CTDI) that combines an RTD with an LLM-powered conversational agent, refined through four workshops over eight months. In addition to the resulting system, Graphy, we contribute design knowledge and recommendations for CTDIs. Co-designers used touch as the primary sensemaking channel for spatial understanding of the data's shape, trends, and relationships, reserved the agent for what touch could not resolve (e.g., calculation and analysis), and used the chart on the RTD to verify the agent's responses. Key findings include: a layered presentation that scaffolds chart exploration through progressive, interactive layers; a feedback grammar that distinguishes user- and agent-initiated tactile feedback; and a sequential interaction pattern -- select, confirm, ask, verify -- where each step grounds the last.

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