Hacking, Switching, Combining: Understanding and Supporting DIY Assistive Technology Design by Blind People

Existing assistive technologies (AT) often fail to support the unique needs of blind and visually impaired (BVI) people. Thus, BVI people have become domain experts in customizing and 'hacking' AT, creatively suiting their needs. We aim to understand this behavior in depth, and how BVI people envision creating future DIY personalized AT. We conducted a multi-part qualitative study with 12 blind participants: an interview on unique uses of AT, a two-week diary study to log use cases, and a scenario-based design session to imagine creating future technologies. We found that participants work to design new AT both implicitly through creative use cases, and explicitly through regular ideation and development. Participants envisioned creating a variety of new technologies, and we summarize expected benefits and concerns of using a DIY technology approach. From our results, we present design considerations for future DIY technology systems to support existing customization and 'hacking' behaviors.