ISO/IEC TS 20071-41:2026

Overview

ISO/IEC TS 20071-41:2026 is an international technical specification published by ISO and IEC that addresses the design and use of pictograms, photos, and icons within augmentative and alternative communication (AAC) in information and communication technology (ICT). The standard is especially focused on making user interface components accessible for individuals who are unable to use written or spoken forms of natural language, supporting inclusive communication through visual symbols and technology.

The scope of this standard covers a variety of ICT devices, including computer displays, tablets, and smartphones, ensuring that requirements and recommendations for accessible pictogram, photo, and icon use in AAC are device- and software-independent. This technical specification aims to enhance effective communication with and for people who use AAC systems, improving interoperability, consistency, and ease of use in digital and physical environments.

Key Topics

• Pictogram Design
  The standard provides recommendations for creating clear, high-contrast pictograms that effectively convey social words, people, objects, actions, concepts, and locations. Emphasis is placed on:

  • Realism and recognizability
  • Simplicity and minimalism
  • Consistency in style and symbolism
  • High contrast and limited, meaningful use of color
  • Respect for user dignity and cultural sensitivity

• Photo Use in AAC
  Photos are highlighted as a complementary tool within AAC, allowing for more individualized representations of specific people, places, or objects. The specification advises structuring photographs so they effectively support or supplement standard pictograms, improving communication flexibility and personalization.

• Icon Accessibility
  Icons in AAC serve as controls for system or application functions. The standard sets out requirements for consistent, distinguishable, and accessible icon designs, ensuring users can easily interact with AAC interfaces across various platforms.

• Pictogram Vocabulary Organization The document details best practices for organizing pictogram sets (vocabularies) into intuitive categories and subcategories for easier navigation and selection. Recommendations include enabling user customization-such as hiding, adding, or arranging pictograms and photos-to suit individual communication needs.

• Device and Platform Independence The guidance is designed to be applicable across a wide array of devices and is not tied to any specific hardware or software, supporting accessibility in diverse technology environments.

Applications

ISO/IEC TS 20071-41:2026 is valuable in several practical contexts:

• Assistive Technology Development:
  Guiding developers of AAC software and hardware to design accessible, user-friendly interfaces for people with complex communication needs.
• Education and Therapy:
  Supporting speech-language pathologists, educators, and caregivers in selecting or customizing pictogram and photo resources for effective communication in school, therapy, or home settings.
• Digital Content Design:
  Informing designers and UX professionals aiming to build accessible mobile and desktop applications with integrated AAC components.
• Healthcare and Community Services:
  Facilitating clear, respectful communication tools for use in hospitals, community centers, and public services where communication barriers may exist.

Related Standards

• ISO/IEC TS 20071-40: Provides general guidance and a foundational framework for AAC in ICT, offering core definitions and principles.
• ISO/IEC TR 20071-42: Offers a basic pictogram vocabulary consistent with AAC guidelines.
• ISO 9241-171:2025: Covers ergonomics of human-system interaction, including accessible user interface design.
• ISO/IEC 11581-10: General considerations regarding the accessibility of icons.
• ISO/IEC 22121-3: Offers guidance on single switch access, relevant to selecting pictograms or icons in AAC environments.

By following ISO/IEC TS 20071-41:2026, organizations and practitioners can ensure that their AAC solutions are accessible, clear, culturally appropriate, and interoperable, thus enhancing digital inclusion and effective communication for all users.