When architecting conversations, make it easy for the user to understand the navigation and not get lost or trapped. Create a linear, time-efficient architecture.This broad range of disabilities must be understood to create a great experience for everyone. Many cognitive disabilities affect areas of the brain that process voice interactions. Connecting to their assistive technology may create desired experiences for everyone. Users who are hard of hearing may wear devices that can connect via Bluetooth, FM or other means. Consider conventions of transmitting to hearing devices.To include these users, provide a multimodal experience. Users who are deaf may not converse using speech directly. Provide alternatives to speech-only interactions (multimodal).Users who are hard of hearing may need to turn devices up to hear and those with hearing assistive technology may need to turn it down. A user must be able to turn the volume of a device both up and down. People who are deaf or hard of hearing are impacted the greatest by shifting to a mode of communication that relies on voice and they will likely need multimodal interfaces. A few tips are listed below for each type. There are four umbrella categories of disabilities that we generally design for: Deaf and hard of hearing, cognitive impairments, physical disabilities, and blind and low vision. Cathy Pearl in Designing Voice User Interfaces defines conversational design to mean “thinking about an interaction with a VUI system beyond one turn.” Most interfaces that are referred to as conversational are probably of the one-turn variety. This article is concerned with both one-turn and conversational voice user interfaces (VUI’s). As we learn to design for this paradigm, we must also figure out how it impacts people with disabilities. Technology is relying more and more on voice interfaces that don’t have a screen, display or tactile interface.
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