a) Non-compliance with accessibility requirements
Images, icons and non-text content
Some logos, icons, images and graphical controls may lack an appropriate accessible alternative, use poorly descriptive alternative text or have labels that do not allow their purpose to be correctly determined using VoiceOver.
[Requirement 11.1.1.1 — Non-text content, UNE-EN 301 549:2022]
Multimedia content
Some audiovisual content may not have all the alternatives needed for its information to be perceived by people with hearing or visual disabilities.
[Requirement 11.1.2.2 — Captions (prerecorded); requirement 11.1.2.3 — Audio description or media alternative; requirement 11.1.2.5 — Audio description (prerecorded), UNE-EN 301 549:2022]
Structure, relationships and grouping of content
On certain screens, there may be headings, fields, checkboxes, buttons or other components whose structure or semantic relationship is not correctly communicated to assistive technologies. This may make it difficult to understand and use the interface through VoiceOver.
[Requirement 11.1.3.1 — Information and relationships, UNE-EN 301 549:2022]
Reading order
In certain processes, the sequence in which VoiceOver presents content may not match the logical or visual order needed to understand the information correctly. This may affect, among other things, date selection, route interpretation, purchasing processes and seat selection.
[Requirement 11.1.3.2 — Meaningful sequence, UNE-EN 301 549:2022]
Use of sensory characteristics and color
Some components use colors, shapes, positions or other visual elements to convey states or information without always providing an equivalent alternative.
[Requirement 11.1.3.3 — Sensory characteristics; requirement 11.1.4.1 — Use of color, UNE-EN 301 549:2022]
Screen orientation
Certain content and functionality may not adapt correctly when the device changes between portrait and landscape orientation.
[Requirement 11.1.3.4 — Orientation, UNE-EN 301 549:2022]
Form fields and autocomplete
Some form fields may not programmatically communicate their purpose or make appropriate use of the identification and autocomplete mechanisms available in the operating system.
[Requirement 11.1.3.5 — Identify input purpose, UNE-EN 301 549:2022]
Text and component contrast
On certain screens, there may be text, controls, separators, icons or other components whose contrast with the background or adjacent elements is insufficient.
[Requirement 11.1.4.3 — Minimum contrast; requirement 11.1.4.11 — Non-text contrast, UNE-EN 301 549:2022]
Content enlargement and adaptation
Some elements may not adapt correctly to text size preferences or certain display settings on the device.
[Requirement 11.1.4.4 — Resize text; requirement 11.1.4.10 — Reflow, UNE-EN 301 549:2022]
Images of text
Certain help content may contain images that incorporate text as part of the image itself, making it difficult to adapt them to the user's viewing needs.
[Requirement 11.1.4.5 — Images of text, UNE-EN 301 549:2022]
Interaction using alternative technologies
Certain functionality may present difficulties when using interaction mechanisms other than conventional touch gestures, such as Switch Control, VoiceOver or Voice Control. These barriers may prevent some processes from being completed independently.
[Requirement 11.2.1.1 — Keyboard, UNE-EN 301 549:2022]
Focus order and management
In some interactions, the focus of assistive technologies may not move or remain consistent with the sequence needed to use the service.
[Requirement 11.2.4.3 — Focus order, UNE-EN 301 549:2022]
Purpose and labeling of controls
Some controls may have accessible names that do not sufficiently describe their purpose or do not match the visible information, making them difficult to use through VoiceOver or Voice Control.
[Requirement 11.2.4.4 — Link purpose in context; requirement 11.2.4.6 — Headings and labels; requirement 11.2.5.3 — Label in name, UNE-EN 301 549:2022]
Language of certain content
Some accessible labels or text may be in a language different from the one configured in the application, making them difficult to interpret using assistive technologies.
[Requirement 11.3.1.2 — Language of parts, UNE-EN 301 549:2022]
Error identification and correction
In certain forms and processes, it may be difficult to identify which field contains an error, understand its cause or know how to correct it.
[Requirement 11.3.3.1 — Error identification; requirement 11.3.3.2 — Labels or instructions; requirement 11.3.3.3 — Suggestions, UNE-EN 301 549:2022]
Name, role, value and state of components
Some interactive elements may not correctly communicate their name, role, state or value through VoiceOver, including the identification of certain selected options.
[Requirement 11.4.1.2 — Name, role, value, UNE-EN 301 549:2022]
Status messages and dynamic changes
Certain alerts, errors, content changes or results of an interaction may not be correctly announced through VoiceOver.
[Requirement 11.4.1.3 — Status messages, UNE-EN 301 549:2022]
Size of certain interaction areas
Some controls may have a reduced touch interaction area, making them difficult to use for people with limited mobility or precision.
[WCAG 2.2, criterion 2.5.8 — Minimum target size]
Seat selection and seat map
In the seat selection process, there may be difficulties related to accessible seat information, reading order, selection states and the transmission through VoiceOver of information that is visually expressed through position, color or shape.
[Applicable requirements 11.1.1.1 — Non-text content; 11.1.3.1 — Information and relationships; 11.1.3.2 — Meaningful sequence; 11.1.4.1 — Use of color; 11.4.1.2 — Name, role, value, UNE-EN 301 549:2022]
Documents generated or provided by the application
Some documents associated with certain processes may not contain all the structural elements needed for interpretation using assistive technologies.
[Applicable requirements of chapter 10 — Non-web documents, UNE-EN 301 549:2022]
