1 <?xml version="1.0" encoding="utf-8"?>

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    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-3CA039D8-A74D-4C9E-B4F5-6E153C7F65A1" xml:lang="en"><title>Finger

    13 vs. stylus </title><prolog><metadata><keywords/></metadata></prolog><conbody>

    14 <section> <p>Consider the use cases of the application when deciding whether

    15 to use finger or stylus control, or possibly hardware keys. Eliminate the

    16 need to switch from using a finger or stylus on the touch screen, to using

    17 any of the hardware keys. Design should enable completing a task with the

    18 same interaction method as it was started with.</p><note>If your application

    19 is intended to be used with the stylus, rather than a finger, try to present

    20 this clearly to the users from the top level. It can be frustrating to start

    21 using an application with finger touch, then switching to stylus, for example,

    22 if the components on screen suddenly get smaller. </note><p>Decide whether

    23 the application is to be used with a single hand, or two hands. Make sure

    24 users are able to use at least the most important functions with only one

    25 hand, even though the application is designed to be used mainly with two hands.

    26  With touch screen devices, this means that the users should be able to perform

    27 most basic actions with their thumb.</p> <p>Applications that require the

    28 use of both hands include:</p><ul>

    29 <li><p>Applications that require the use of stylus</p></li>

    30 <li><p>Applications that are intended for landscape mode</p></li>

    31 <li><p>Applications that require data input </p></li>

    32 </ul> </section>

    33 </conbody></concept>