ISO INTERNATIONAL STANDARD 9241-960 First edition 2017-09 Ergonomics of human-system interaction - Part 960: Framework and guidance for gesture interactions ErgonomiedeI'interactionhomme-systeme- Partie 960: Cadre et lignes directrices relatives aux interactions gestuelles Reference number IS0 9241-960:2017(E) ISO @ISO2017 IS09241-960:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, 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 Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org i IS02017-All rights reserved IS0 9241-960:2017(E) Contents Page Foreword ..V Introduction. ..vi 1 Scope. 2 Normative references 3 Terms and definitions 4 General. ..2 4.1 Need for a standard on gesture usability .2 4.2 ..2 Usage.. 4.3 Intentional and unintentional gestures .3 4.4 Matching gestures and functionality ..3 5 Ergonomics ofgestures. ..4 5.1 Ergonomic constraintsand features 4 5.2 Device capabilities.. 5.3 Device constraints. 4 Guidance in defining gestures. .5 6 6.1 Process for gesture definition .5 6.1.1 General. 5 6.1.2 Exploring the design space .5 6.1.3 Identifying purposes. .6 6.1.4 Designing gestures and gesture commands .7 6.1.5 Organizing gesture sets 7 6.1.6 Evaluating gestures . .7 6.1.7 Iterating the gesture interface. .8 6.1.8 Documenting gestures .8 6.1.9 Explaining gestures. ..8 6.2 Features of gestures.. .8 6.2.1 Mappingofgesturecommandstofunctions .8 6.2.2 Nestedgestures .8 6.2.3 Feedbackfor strokegestures. .9 6.2.4 Continuous feedback forgesture commands .9 6.2.5 Use of feedforward informationfor strokegestures 9 6.2.6 Parameters of gesture commands .10 6.3 Timing and speed .10 6.3.1 Recognition of a gesture at different speeds ..10 6.3.2 Use of the speed of a gesture. .10 6.4 Toleranceofgestureinterface ..10 6.5 Sequences of gestures.. .10 6.5.1 Beginning a gesture .10 6.5.2 Feedback ongesture initiation .10 6.5.3 Completing the purpose of a gesture .10 6.5.4 Feedbackongesturecompletion .10 6.5.5 Theneedfortransitionbetweengestures .11 6.5.6 The effect of transitions between gestures .11 Overlapping gestures.. 6.5.7 .11 6.5.8 State changes. .1 6.6 Gesture sets. ..11 6.6.1 General ..11 6.6.2 Purpose of a set of gestures. .11 6.6.3 Consistencyamonggestures .11 6.6.4 Discriminability of gestures. .12 6.6.5 Subsets within a gesture set. ..12 Alternative subsets within agesture set .12 6.6.6 @ IS0 2017 - All rights reserved iii