>The three most frequently mentioned products that participants thought would be useful but were not yet available were bus station/destination announcement systems, devices that warn a person about barriers, and devices to read documents or signs.
Murat Bengisu PhD (2010) Assistive Technologies for Visually Impaired
Individuals in Turkey, Assistive Technology®, 22:3, 163-171, DOI: 10.1080/10400435.2010.492773
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