--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-F3CB6985-A9AA-4E01-B157-5AB8DDC7951B.dita	Thu Jan 21 18:18:20 2010 +0000
@@ -0,0 +1,42 @@
+<?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-F3CB6985-A9AA-4E01-B157-5AB8DDC7951B" xml:lang="en"><title>Finger
+usable UI</title><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>This document describes stylus as the input method with touch UI, but events
+apply to finger use also. However, in some cases the components may not be
+finger optimized due to the size of objects, e.g. virtual keyboard or text
+field.</p>
+<p>In Symbian, UI style defines the target minimum sizes for a UI element considered
+as finger usable:</p>
+<ul>
+<li><p>7 x 7 mm with 1 mm gaps for index finger usage </p></li>
+<li><p>8 x 8 mm with 2 mm gaps for thumb usage </p></li>
+<li><p>List type of components should have minimum of 5 mm line spacing</p></li>
+</ul>
+<p>Targets are general as in practice sizes can be use case dependent, e.g.
+due to frequency of use, efficiency vs. error criticality or ease of error
+correction, location of the button (edge of screen vs. center).</p>
+<p>The visible area of the component and the component's active area should
+be identical. There are exception cases to this rule though:</p>
+<ul>
+<li><p>When components are located near the edge of the display the touchable
+area should extend fully to the edge of the display (i.e. beyond the components
+visible graphics). </p></li>
+<li><p>Visible area is smaller than the active area in order to keep the balance
+in look and feel of the UI. For example scrollbar has wider touch area than
+visible area. </p></li>
+<li><p>Active area is smaller than the visible area in order to avoid unwanted
+presses to contiguous active areas. In this case there it should be graphically
+indicated where the user should tap. Example: fixed toolbar buttons in landscape
+layout.</p></li>
+</ul>
+</conbody></concept>
\ No newline at end of file