miyanokomiya

<h2 id="situation">
<a class="header-anchor-link" href="#situation" aria-hidden="true"></a> Situation</h2>
<ul>
<li>On iOS, any borwser (because all of them are based on Webkit)</li>
<li>When I put a stylus pen on the screen, touch events are no longer detected at all.</li>
</ul>
<p><span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__f4d175ddca56e" src="https://embed.zenn.studio/card#zenn-embedded__f4d175ddca56e" data-content="https%3A%2F%2Fstackoverflow.com%2Fquestions%2F52299307%2Fjs-stylus-touchstart-event-not-triggerd-if-a-finger-is-already-touching-the-scr" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://stackoverflow.com/questions/52299307/js-stylus-touchstart-event-not-triggerd-if-a-finger-is-already-touching-the-scr" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://stackoverflow.com/questions/52299307/js-stylus-touchstart-event-not-triggerd-if-a-finger-is-already-touching-the-scr</a></p>


<p>Some iOS application handle them, so it's probably attributed to Webkit.<br>
This value <code>requiresExclusiveTouchType</code> is mentioned on Stackoverflow.</p>
<p><span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__dc36945879948" src="https://embed.zenn.studio/card#zenn-embedded__dc36945879948" data-content="https%3A%2F%2Fdeveloper.apple.com%2Fdocumentation%2Fuikit%2Fuigesturerecognizer%2F1649116-requiresexclusivetouchtype" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://developer.apple.com/documentation/uikit/uigesturerecognizer/1649116-requiresexclusivetouchtype" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://developer.apple.com/documentation/uikit/uigesturerecognizer/1649116-requiresexclusivetouchtype</a></p>


<p><span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__e9ae82ff7d042" src="https://embed.zenn.studio/card#zenn-embedded__e9ae82ff7d042" data-content="https%3A%2F%2Fforum.ionicframework.com%2Ft%2Fhow-to-modify-requiresexclusivetouchtype%2F239076" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://forum.ionicframework.com/t/how-to-modify-requiresexclusivetouchtype/239076" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://forum.ionicframework.com/t/how-to-modify-requiresexclusivetouchtype/239076</a></p>


<p>Even using two stylus pens doesn't help. Only one pen is detected when there is one.</p>
