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+++ b/Symbian3/SDK/Source/GUID-F5371A59-A637-4623-A2C0-9A8B8E5F3CFB.dita	Wed Mar 31 11:11:55 2010 +0100
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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-F5371A59-A637-4623-A2C0-9A8B8E5F3CFB" xml:lang="en"><title>Interaction
+with other hardware components</title><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>In addition to traditional keys, interaction devices of other types may
+be built in the devices. In most scenarios, they produce input events similar
+to keys, so that the software need not be changed. The hardware commands do
+not have any effect on the application.</p>
+<p>Examples of specific interaction devices are:<ul>
+<li><p>Optical joysticks</p></li>
+<li><p>Optical 9-way finger navigation</p></li>
+<li><p>Acceleration sensors</p></li>
+</ul></p>
+<section id="GUID-C70CF894-EACC-470A-98C7-846B7FBC4F04"><title>Optical joystick</title><p>An optical joystick can be used
+instead of (or in addition to) the traditional navigation keys. </p><p>When
+used in combination with traditional scroll keys, optical joystick performs
+same functions as that of mechanical scroll keys. However, the speed of the
+movement can differ. </p><p>When used individually as the only scrolling device,
+optical joystick emulates the functions of mechanical scroll keys. Sliding
+a finger down over the joystick provides the same function as that of pressing
+the down key. Repeat functionality can be produced with longer strokes. </p></section>
+<section id="GUID-DF3C81F4-2FAD-4373-8568-0CFC6C7F9618">       <title>Optical
+9-way navigation</title><p>The Symbian platform supports additional optical
+navigation that is integrated to centre Select key. The supported directions
+in 9-way rocker key are domed main directions and diagonals by combining the
+main directions. Optical navigation allows continues moment of the finger
+as observed in touch pad. It is suitable for pointer moving in browser and
+content panning, for example, in photos, browser, and maps.</p></section>
+<section id="GUID-10494E4E-B037-4874-BEFB-20AB95B61CBA"><title>Acceleration
+sensor</title><p>There are three types of interaction events that can be recognized
+with acceleration sensors:<ol>
+<li id="GUID-704B967F-7E70-4446-B443-DDCA665D80BE"><p>Tapping the device by
+hand (double tap) to perform a given function in set events. Tapping interaction
+is not recommended for touch devices to prevent the unintentional touch actions.</p></li>
+<li id="GUID-43884A1A-DE03-4074-8D35-4C5254159F14"><p>Changing the device’s
+orientation from portrait to landscape and back to perform screen re-orientation.</p></li>
+<li id="GUID-C07401D7-3AD2-4D74-B61D-E08A95F4E504"><p>Changing the device
+orientation from screen up (for example on a table) to screen down and back
+to silence an alert tone (for example, silencing an incoming call).</p></li>
+</ol></p>The system is capable of sensing any of listed events. The supported
+sensor interactions are configurable per device, but must be consistent in
+not assigning different functions to these standard events. Also, the user
+can be provided with the option to set the desired interactions. For example,
+it is possible to set methods 1 and 3 (double tap by hand and turning the
+screen downwards) for the 'silence incoming call' event. The settings are
+available in <b>General Settings</b>. A double tap on the device produces
+tactile (vibrating) feedback to reinforce and acknowledge that the interaction
+is successful. See <xref href="GUID-581A8E4B-12BE-41C0-A20E-3087A80FEECF.dita">Tactile
+feedback</xref> for more details.</section>
+</conbody></concept>
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