Glossary
Searchable terminology from accessibility, web standards, and related fields.
29 results found in accessibility barriers.
- Outlier detection (Anomaly detection, Novelty detection)
- An algorithmic technique that identifies data points or behaviors that deviate significantly from expected patterns, used in fraud detection, quality assurance, CAPTCHAs, and crowd labor platforms. Pe…
- Personal Delivery Device (PDD, Delivery Robot, Autonomous Delivery Robot, Sidewalk Robot)
- Personal delivery devices (PDDs) are small autonomous or semi-autonomous robots that travel on sidewalks and pedestrian pathways to deliver food, packages, and other goods. These devices have been gra…
- Right-of-Way (Pedestrian Right-of-Way, ROW)
- Right-of-way refers to the legal right of a pedestrian, vehicle, or other entity to proceed with precedence over others in a specific area of public space. In accessibility, pedestrian right-of-way is…
- Sensory erasure (Sensory exclusion)
- The systematic marginalization or elimination of non-visual sensory modalities in the design of technologies, interfaces, and information systems. Sensory erasure occurs when platforms treat visual in…
- Sighted People Interference (Sighted Interference)
- A social barrier experienced by blind and visually impaired people when sighted individuals's reactions, interventions, or presence impede their independent activities in public spaces. This can inclu…
- Situationally Induced Impairment (SIID, Situational Impairment, Situational Disability)
- A temporary functional limitation caused by environmental or contextual factors rather than a permanent health condition or disability. Examples include difficulty using a phone while walking (reduced…
- Touch Target (Tap Target, Hit Area, Target Size)
- A touch target is the area on a touchscreen interface that responds to a user's tap or touch input. Accessibility guidelines recommend minimum touch target sizes to ensure that people with motor impai…
- Version segregation (Parallel versions, Separate accessible version)
- A design practice in which a separate, simplified, or modified version of a product, game, or platform is created specifically for disabled users rather than making the main version accessible. While …
- Z-Order (Stacking Order, Layer Order)
- Z-order refers to the front-to-back layering sequence of overlapping objects on a 2-D digital canvas, determining which objects appear in front of or behind others. In accessibility, Z-order is signif…