Generative AI (GenAI) tools are increasingly used for spreadsheet tasks, yet little is known about how blind users verify their outputs in accuracy-critical contexts. We conducted a study with 12 blind spreadsheet users to explore verification practices across tasks such as information extraction, formula generation, trend analysis, chart creation, and formatting. Participants never fully trusted outputs without verification and employed diverse strategies, including manual checks with screen reader and spreadsheet features, same AI-assisted verification, cross-AI tool validation, leveraging prior knowledge, and human assistance. These approaches were adapted based on task context, perceived risk, and users’ expertise. Errors were common, particularly in chart generation and formatting, some detected, others overlooked. While verification improved confidence, it was often effortful, time-consuming, or infeasible for visual tasks. We discuss how blind users utilize GenAI not only as a task performer but also as a verification aid and validator, highlighting design opportunities for more accessible and reliable spreadsheet use.

Productivity applications including word processors, spreadsheets, and presentation tools are crucial in work, education, and personal settings. Blind users typically access these tools via screen readers (SRs) and face significant accessibility and usability challenges. Recent advancements in Generative AI (GenAI) may address these challenges by enabling natural language interactions and contextual task understanding. However, there is limited understanding of SR users' needs and attitudes toward GenAI assistance in these applications. We surveyed 99 SR users to gain a holistic understanding of the challenges they face when using productivity applications, the impact of these challenges on their productivity and independence, and their initial perceptions of AI assistance. Driven by their enthusiasm, we conducted interviews with 16 SR users to explore their attitudes toward GenAI and its potential usefulness in productivity applications. Our findings highlight its need to support existing SR workflows and the importance of enabling customization and task verification.

Spreadsheets are widely used for storing, manipulating, analyzing, and visualizing data. Features such as conditional formatting, formulas, sorting, and filtering play an important role when understanding and analyzing data in spreadsheets. They employ visual cues, but we have little understanding of the experiences of blind screen reader (SR) users with such features. We conducted a study with 12 blind SR users to gain insights into their challenges, workarounds, and strategies in understanding and extracting information from a spreadsheet consisting of multiple tables that incorporated data analysis features. We identified five factors that impact blind SR users’ experiences: cognitive overload, time-information trade-off, lack of awareness and expertise, inadequate system feedback, and delayed and absent SR responses. Drawn from these findings, we discuss design suggestions and future research agenda to improve SR users’ spreadsheet experiences.