1、Information technology User interface accessibility Part 1:User accessibility needsTechnologies de linformation Accessibilit de linterface utilisateur Partie 1:Besoins daccessibilit de lusagerINTERNATIONAL STANDARDISO/IEC29138-1Reference numberISO/IEC 29138-1:2018(E)First edition2018-11 ISO/IEC 2018
2、 ISO/IEC 29138-1:2018(E)ii ISO/IEC 2018 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO/IEC 2018All rights reserved.Unless otherwise specified,or required in the context of its implementation,no part of this publication may be reproduced or utilized otherwise in any form or by any means,electron
3、ic or mechanical,including photocopying,or posting on the internet or an intranet,without prior written permission.Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCP 401 Ch.de Blandonnet 8CH-1214 Vernier,GenevaP
4、hone:+41 22 749 01 11Fax:+41 22 749 09 47Email:copyrightiso.orgWebsite:www.iso.orgPublished in Switzerland ISO/IEC 29138-1:2018(E)Foreword.viiIntroduction.viii1 Scope.12 Normative references.13Termsanddefinitions.14 Accessibility goals.35 User accessibility needs and related information.45.1 General
5、.45.1.1 Needs.45.1.2 Some users need.55.2 The organization of this set of user accessibility needs.55.2.1 Organization based on accessibility goals.55.2.2 Heuristics for the organization of this set of user accessibility needs.55.3 Detailed information on needs.65.3.1 The statement of the need.65.3.
6、2 Need identifier.65.3.3 Description of the need.65.3.4 Instances of the need.75.3.5 Examples of the need.75.3.6 Examples of an instance.75.3.7 Short versions of the needs and their instances.75.4 Applying the needs.75.4.1 Users and uses of the set of needs.75.4.2 General activities involving user n
7、eeds.75.4.3 Identifying system and context specific user needs.85.4.4 Developing system requirements.85.4.5 Evaluating systems.86 Details of the user accessibility needs.96.1 Details of the needs related to suitability for the widest range of users.96.1.1 To recognize that they are included as a sys
8、tem user within diverse contexts.96.1.2 To have accessible support for using the system.96.1.3 To have the system accessible to an individual with combinations of needs.106.2 Details of the needs related to conformity with user expectations.106.2.1 To not be surprised by the results of interactions
9、with the system.106.2.2 To apply personal knowledge and experience to interact successfully with the system.116.2.3 To receive instruction or training directed at preparing users for new knowledge needed to interact successfully with the system.116.2.4 To obtain immediate and easily accessible help
10、or further instructions,where such help can be provided by the system.116.3 Details of the needs related to support for individualization.126.3.1 To be provided with(and to choose)the way of interacting with a system that best works for them(including activating and deactivating built-in accessibili
11、ty features).126.3.2 To choose between the available input/output modalities and their configuration without requiring restart of the system.126.3.3 To have simultaneous use of alternate interaction modalities.136.3.4 To be provided with information on available options for interacting with a system
12、 on which to base a choice of interaction methods.136.3.5 To be provided an accessible means to choose individualization features.136.3.6 To have individualization features maintained for future uses of the system,until changed by the user.14 ISO/IEC 2018 All rights reserved iiiContents Page ISO/IEC
13、 29138-1:2018(E)6.3.7 To have the system use complete standardized sets of needs or preferences from specific standards.146.3.8 To take or give up control of functions that could be performed by either the user or the system.156.3.9 To have the option to use the system with a minimum of setup or con
14、figuration.156.4 Details of the needs related to approachability.156.4.1 To have the system free from any physical barriers.156.4.2 To have the system free from any psychological barriers.166.4.3 To have the system maintain the users attention.166.4.4 To have interaction options clearly presented.17
15、6.4.5 To have appropriate levels of privacy and security.176.4.6 To avoid patterns that cause psychological or physical discomfort or disturbance.176.4.7 To use the system remotely as well as directly.186.4.8 To have the system free from environmental barriers.186.5 Details of the needs related to p
16、erceivability.196.5.1 To use a specific sensory modality(or a set of specific modalities)to perceive information.196.5.2 To have information presented visually.196.5.3 To have visual information available in other modalities.196.5.4 To have information presented in auditory form.206.5.5 To have audio information available in other modalities.216.5.6 To have information in tactile form.216.5.7 To have tactile information available in other modalities.226.5.8 To experience information via multiple
