IEC International ISO Standard ISO/IEC22121-3 First edition Information technology Virtual 2025-12 keyboards user interfaces - Part 3: Virtual keyboards interactions Technologies de I'information-Interface utilisateur des claviers virtuels- Partie3:Modes d'interactions des claviers virtuels Referencenumber ISO/IEC22121-3:2025(en) @ISO/IEC2025 IS0/IEC22121-3:2025(en) COPYRIGHTPROTECTEDDOCUMENT IS0/IEC2025 All 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, electronic 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 Iso's member body in the country of the requester. ISO copyright office CP 40i: Ch.de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland @IS0/IEC 2025-All rights reserved i IS0/IEC22121-3:2025(en) Contents Page Foreword. Introduction .vi Scope. .1 1 2 ..1 Normativereferences 3 Terms and definitions .1 4 Conformance .4 5 Interactionmodes. .4 5.1 Userdiversityand interactionmodes. ..4 5.2 Automatic scanning (single switch) for visual virtual keyboards ..4 5.2.1 General ..4 5.2.2 Genericrulesforautomaticscanning .5 5.2.3 Scanning methods. .5 5.2.4 Scanning speed and delays 6 5.2.5 .6 Re-scan and skip-scan methods 5.2.6 Visual feedback context-specific to automatic scanning .6 5.2.7 Audiofeedbackcontext-specifictoautomatic scanning 6 5.3 Manual scanning for audio and visual virtual keyboards 5.3.1 General .7 5.3.2 Generic rules for manual scanning 5.3.3 Scanning methods. .7 5.3.4 Visualfeedback and signifiers context-specific to manual scanning ..7 5.3.5 Audio feedback and signifiers context-specific to manual scanning. .7 5.4 Finedirectpointingmodewithvisual control. .8 5.5 Low precision direct pointing mode, with visual and audio control ..8 5.5.1 General .8 5.5.2 Selection and validation. ..8 5.5.3 Visual signifiers and feedback context-specific to low precision direct pointing mode .9 5.5.4 Auditory signifiers and feedback context-specific to low precision direct pointing mode .9 5.6 Low precision gestural pointing mode, with visual and audio control ..9 5.6.1 General .9 5.6.2 Visual signifiers and feedback context-specific to low precision gestural pointingmode. .10 5.6.3 Audio signifiers and feedback context-specific to low precision gestural .10 pointing mode. 5.7 Thumb mode with visual and audio control. ..10 5.7.1 General ..10 5.7.2 Visual signifiersand feedback context-specifictothumbmode .10 5.7.3 Auditory signifiersandfeedbackcontext-specifictothumbmode ..10 5.8 Writtenmodewithvisualandaudio control .11 5.8.1 General .11 5.8.2 Visual signifiers and feedback context-specificto written mode .11 5.8.3 Auditorysignifiers andfeedback context-specifictowrittenmode .11 5.9 Pictographic keyboards (symbolic) .12 5.9.1 General 12 5.9.2 Visual signifiersand feedback context-specifictopictographickeyboards ..12 5.9.3 Auditorysignifiers andfeedbackcontext-specifictopictographickeyboards 12 5.10 Listkeyboard 12 5.10.1 General .12 5.10.2 Visual signifiers and feedback context-specific to list keyboards .13 5.10.3 Auditory signifiers and feedback context-specific to list keyboards .13 5.11 Navigation keys mode .14 @IS0/IEC 2025-All rights reserved iii IS0/IEC22121-3:2025(en) ..14 5.12 Assistivetechnologiesconformance. Bibliography 16 @IS0/IEC 2025-All rights reserved iv IS0/IEC 22121-3:2025(en) Foreword ISo (the International Organization for Standardization) and IEC (the International Electrotechnical Commission)form the specialized system for worldwide standardization. National bodies that are members of Iso or IEC participate in the development of International Standards through technical IsO andIEC technical committees collaborate infields ofmutual interest.Other