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Design Simple but Powerful application

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Designer is constantly confronted with challenge that how to make the application simple but also powerful. Powerful features will usually result in the complicated user interface. How to simplify it without sacrificing the powerfulness ?

This decks are for addressing the challenges from both product management and user experience design perspectives.

Published in: Design, Technology

Design Simple but Powerful application

  1. 1. Simple and Powerful Ver. 0.92 Jim Liang Terry Wang
  2. 2. Part 1: About Simple and Powerful Part 2: Deep Dive – How to address the challenges?
  3. 3. Users hate complexity We Simplicity
  4. 4. If ease of use was the only valid criterion, people would stick to tricycles and never try bicycles. But simple is not the only one criterion Dr. Douglas Engelbart Inventor of Mouse It‘s much harder to learn bicycles than tricycles. However, once user learned how to ride it, it will offer user huge benefit in terms of productivity and efficiency. To drive fast, which one is better?
  5. 5. People want powerful products Powerful Product
  6. 6. Powerful products have a lot of functionalities and information, and usually it’s difficult to use, build and maintain. But powerful usually means complicated
  7. 7. Can we have both? There is a natural tension between the two. POWERFULSIMPLE
  8. 8. Different product types have different focus Consumer products tend to compete on ease of use while enterprise products still compete on features and functions. Simple Powerful
  9. 9. Different focus based on target market Adobe Photoshop • Rich functionalities • High learning curve • Mainly aimed at professional users Professional Application Instagram • Limited functionalities • Easy to learn and use • Aimed at non-professional users
  10. 10. Extremely complex UI works really well in extreme cases Figure: Airplane cockpit
  11. 11. Even in the same application, priorities are different. Different modules/tasks have different priorities Routine & Repetitive tasks Efficiency is the focus Occasional Tasks Ease of learning is the focus
  12. 12. • Complex requirements (edge cases, invalid requirements) • Complicated processes and task flows • Many roles involved in the business scenarios • Many dependencies between functions and processes • Feature creeps
 • Bad solution architecture • Lousy UI design • Messy technical architecture • Technical constraints • Conflicting interests in development team • Compromise in the team • etc… Design&Implementation What factors could result in complexity? Requirement
  13. 13. Balancing the conflicts You can achieve both power and simplicity through carefully balanced feature selection and presentation1.
 1 Source: Powerful and Simple, Microsoft Art of Balance
  14. 14. HOW
  15. 15. Part 1: About Simple and Powerful Part 2: Deep Dive – How to address the challenges?
  16. 16. Case Study: Simplify the control Source: Secrets of Simplicity: rules for being simple and usable How to simplify the remote control?
  17. 17. Case Study: Simplify the control Remove features
  18. 18. Case Study: Simplify the control Hide features
  19. 19. Case Study: Simplify the control Group features
  20. 20. Source: Secrets of Simplicity: rules for being simple and usable Case Study: Simplify the control Displace features
  21. 21. Part 2 Table of contents REQUIREMENT • Requirements are crucial • Tips for avoiding feature creep DESIGN • Solution architecture design • UX design • Technical design
  22. 22. Part 2 Table of contents REQUIREMENT • Requirements are crucial • Tips for avoiding feature creep DESIGN • Solution architecture design • UX design • Technical design
  23. 23. How many requirements are really valid? 45% of delivered features are never used.1 Source: Johnson, J. 2002. Keynote speech, XP 2002, Sardinia, Italy. 45% 55%
  24. 24. Crappy requirements lead to crappy products Rubbish Out Long time development Rubbish In
  25. 25. Part 2 Table of contents REQUIREMENT • Requirements are crucial • Tips for avoiding feature creep DESIGN • Solution architecture design • UX design • Technical design
  26. 26. Tips for avoiding features creep • Drive design by users’ goals • Say No by default • Validate the requirements early • Optimize the requirements • Prioritize the requirements • Focus on core scenarios • Cut features • Think big, Start small • Address diverse requirements via Layering
  27. 27. Drive design by users' goals • Start the design from understanding and analyzing user's needs. • Feature list can be a good approach for tracking requirements and product management. However, don't use it as the starting point for design. • Avoid “me too” strategy. Understand users in the context ▪ Common and exceptional tasks ▪ Work environments and work flows ▪ Tools and artifacts ▪ Social interdependencies and communication patterns ▪ Common pain points ▪ Preferences ▪ Unfulfilled needs ▪ Information needs Contextual Design
  28. 28. Say No by default • New features almost always mean more UI, more code and more bugs. • When you say yes, you say no to a lot of other things. • A feature must work very hard to prove its value. When it comes to feature requests, the customer is not always right. If we added every single thing our customers requested, no one would want our products. – Getting Real, 37signals
  29. 29. Validate requirements early IT managers, CIO, Marketing, etc End UserProxies Talk to the real users
  30. 30. • Paper Prototypes • Usability Testing • Site Visit, etc The approaches for validation
  31. 31. • Simple processes lead to simple design and implementation. Try to optimize the processes first before design. • A well-thought solution includes more than the software. People, organization, processes should all be considered. Optimize business processes Streamline Task flow
  32. 32. Prioritize use cases by Importance of Scenarios & Frequency of Use Prioritize requirements Importance Frequency of use 1x/Day1x/Week1x/Month1x/0.5year1x/Year 1 2 3 4 6 7 8 5 Use Cases Example: 1. Create new Cash Accounts 2. Enter expenses (excluding ERM) 3. Enter AP Cash Payments 4. Enter revenues 5. Enter AR Cash Payments 6. Enter incoming Cash Transfers 7. Enter outgoing Cash Transfers 8. Cash Transfer Cash Box to Cash Box
  33. 33. Focus on core scenarios • Focus on the essentials. (80/20 rule) • Design for the common case 1 • Don't let edge cases jeopardize your system design. 1 Source: Designing with the Mind in Mind, Jeff Johnson
  34. 34. Cut features • The simplest way to achieve simplicity is through thoughtful reduction 1 . • Make hard decisions instead of making everything optional or configurable. 1. Source: The Laws of Simplicity, John Maeda Take whatever you think your product should be and cut it in half. Pare features down until you’re left with only the most essential ones. Then do it again. – Getting Real, 37signals
  35. 35. Same intentionally left out a rather common feature in social networking apps — adding friends — which seems essential from the first look. This decision made their product simpler from both development and users point of view. Yet the discovery model is quite addictive and powerful. Example of thoughtful deduction
  36. 36. 
 Start to build a skinny system, add muscles in later steps1 . Think big, start small 1 Source: Be Smart! by Ivar Jacobson Skinny System Full Fledged System
  37. 37. WeChat is a perfect example of thinking big and starting small. They wanted to build a platform/ecosystem to connect everything. Yet the first version is only an IM that runs only on mobile phones. Example of “ Think big and start small ”
  38. 38. Improve the product iteratively Source of Diagram: MSF, Microsoft Q: How to know what the essential requirements are? A: Ship the product and listen to what customers say.
  39. 39. Personalization Let end users adapt the UI Extension Enhance functions by Rules, Scripts, Templates, Formula, Configuration by IT admin or power user Customization Customize features by 3rd party partners or customers themselves Platform/Core Pre-ship the core features and framework by software vendor * User-friendly Flexibility and cost for change Help users adapt as the business changes and grows Code Code/API Rule, Script, Template, Configuration, etc UI * Platform strategy might be only suitable for big players. high low high low Address diverse requirements via Layering
  40. 40. Case Study: Microsoft Excel Why is Microsoft Excel widely used in enterprise? 1. Flexible to meet various needs. 2. User can have powerful capability even without coding. 3. Efficient tools to enhance productivities.
  41. 41. Part 2 Table of contents REQUIREMENT • Requirements are crucial • Tips for avoiding feature creep DESIGN • Solution architecture design • UX design • Technical design
  42. 42. Solution Architecture Design 1. Automation 2. Balance the workload between users 3. Integration 4. Offer collaboration capability 5. Leverage intelligence 6. Simplify the solution holistically

  43. 43. Manual Data Entry RFID No UI needed to input data! Bar-Code Source of concept : Dan Rosenberg, SAP The best UI is no UI Automation
  44. 44. Workflow reduces human efforts on routine tasks. Automation – Workflow Figure: Oracle Workflow Builder
  45. 45. Automation – Notification Actionable notifications has become a standard mechanism in modern systems.
  46. 46. Setting up a rule for once and it will do the work automatically afterwards. Automation – Rules Figure: Microsoft Outlook
  47. 47. Automation – Batch action In Adobe Photoshop, people can record actions and re-apply them to a batch of photos.
  48. 48. Automation – Template In Zoho, people can create different layouts for invoices based on system-provided templates.
  49. 49. Balance the workload between users. • Centralized management. e.g. system configuration, mass data management • Decentralized management. e.g. employee self-service, interactive dashboard How to distribute the tasks ? Balance the workload
  50. 50. Balance the workload – Decentralized approach By building a self-service center and letting employees to do certain activities by themselves increases the productivity of the organization. Otherwise, IT/admin will become bottleneck.
  51. 51. Sometimes it’s very hard to get rid of complexity, you can think about how to shift the complexity to a few power users/IT Admin when you design the solution/ UI. Therefore, the UI for end users will be much simpler. Shift the complexity to advanced users Balance the workload – Centralized approach
  52. 52. Integration Letting systems talk to each other eliminates the needs for human input. Less human intervention also means less error-prone. A B C
  53. 53. Continuity in iOS 8 bridges the workflow gap between multiple Apple devices. Integrating devices
  54. 54. Integrating services IFTTT lets people automate routine tasks by connecting different web services.
  55. 55. Github (Open source) makes it really simple for a group of people to work on a problem collaboratively. By providing a simple platform, Github allows people to achieve amazing things. Offer collaboration capability
  56. 56. Offer monitoring capability • Exception-based Working Model 
 This working model reduces user’s workload. User just focuses on the exception/Alerts from system.
 • Facilitate visibility and insight through Dashboard, Embedded Analytics, etc. 
 Therefore, user can easily monitor KPI, workload, overdue tasks, status, process transparency, etc.
 • Provide Real-time monitoring if feasible
 Real-time capability can help user get the information immediately without waiting. Google Real-Time Analytics is a good example. Example: Google Analytics (Real-Time) Example: SAP Business ByDesign
  57. 57. Don’t just focus on the UI. The hidden side is also key to making a simple and powerful system. For example: 1. New technology 2. Business Intelligence 1. Query, Reporting and Analysis 2. Scorecards, Dashboard and Real-time monitoring 3. Text mining 4. Data mining 3. Collective Wisdom 1. User’s voting, review, recommendation 2. Expert’s view 3. Co-creation (e.g., Wiki) Leverage intelligence
  58. 58. Siri uses technology to eliminate UIs in all places. Technology simplifies the solution
  59. 59. Touch ID saves the effort of entering passcode each time the user wants to unlock the phone. Technology simplifies the solution
  60. 60. Business Intelligence let you identify your problem easily Figure: Mixpanel funnel analysis
  61. 61. Let people help each other User ratings on imdb.com User comments on amazon.com
  62. 62. Simplify solution from a holistic view Not only easy to use, but also: • Easy to buy • Easy to maintain (e.g., SaaS) • Easy to upgrade (e.g. iPhone) • Easy to access (e.g. mobile, web, desktop applications)
  63. 63. Part 2 Table of contents REQUIREMENT • Requirements are crucial • Tips for avoiding feature creep DESIGN • Solution architecture design • UX design • Know your users • Basic UI design framework • Design principles and tips • Technical design
  64. 64. Puts users’ needs at the center of design We are not the users! Product managers, designers and developers are not the real users.
  65. 65. User’s psychological characteristics • Usually users are impatient and in a hurry • Users want to get job done as quick as possible • Goal-oriented ( esp. Users of Business Applications) • Some users are hesitant and afraid of disrupting the system • Users of business software do not want to look stupid • For users of business application, efficiency is very important. Meanwhile, high learning curve will frustrate users • User has limited capacity to deal with the information at one time. (Magic number seven: 7±2 ). So you shall reduce the user’s cognitive load. Recognition is easier than remembering (recall). • Users prefer familiar path; Users don’t want to explore new ones1 • Learning from experience and performing learned actions are Easy 2; 1 .2 Source: Designing with the Mind in Mind, Jeff Johnson
  66. 66. Design for different user types In many cases UI complexity is resulted from one single universal UI for everyone (all customers and all types of users). Instead, think about using different UI to satisfy different needs. Casual User Professional User Administrator / Power User / Key User Different user types
  67. 67. Users will not always remain as beginner Easy to Learn Efficiency The learnability (easy to learn) is often in conflict with the efficiency. How to balance them is a constant challenge to designers. Designer’s Dilemma Which one is more important? ?
  68. 68. The experience level of people performing an activity tends, like most population distributions, to follow the classic statistical bell curve. Although beginners quickly improve to become intermediates, they seldom go on to become experts. Intermediates are the mainstream Most users are intermediates. Source: About the face 3, Alan Cooper
  69. 69. Part 2 Table of contents REQUIREMENT • Requirements are crucial • Tips for avoiding feature creep DESIGN • Solution architecture design • UX design • Know your users • Basic UI design framework • Design principles and tips • Technical design
  70. 70. The elements of user experience Source: The Elements of User Experience – Jesse James Garrett
  71. 71. Simplicity depends on how you organize information into meaningful chunks/units. POP Model POP UI Design Model 
 Prioritize, Organize, Present Prioritize Organize Present UI DESIGN
  72. 72. Prioritize Information Prioritize Organize Present UI DESIGN If everything is important, nothing is. 1. All elements/tasks are not equally important. 2. Differentiate them based on importance and frequency of use. 3. Emphasize the important ones and remove the irrelevant.
  73. 73. Organize Information Prioritize Organize Present UI DESIGN Organize the information in a way that is logical and meet user’s expectation. Information architecture is commonly used to describe the structure/shape of the information.
  74. 74. Figure: Information architecture of the library of University Duke
  75. 75. Divide each difficulty into as many parts as is feasible and necessary to resolve it. Rene Descartes Philosopher, mathematician and writer Jef Raskin HCI expert, starter of the Macintosh project Most human beings can only concentrate on one thing at a time. Note: Separation can make complex tasks feel simple. However, it could result in more clicks and usually less efficiency, even discoverability issues. Organize Information – Separation
  76. 76. Wizard breaks a complex task into several steps. Each step is presented in a separate screen. Figure: Windows new network connection wizard
  77. 77. Information on the same screen can be further organized into logical groups. Figure: AGF website
  78. 78. Present information 1. Create a clear visual hierarchy. 2. Use the right UI element/pattern to present information depending on the usage scenarios. For example: • Text • Picture, video, diagram, illustration, sound • Table • Chart • Form • Tab • Toolbar • Accordion • Carousel • … Prioritize Organize Present UI DESIGN
  79. 79. How to create visual hierarchy Group Alignment Contrast Repetition
  80. 80. Figure: ia.net Figure: basecamp.com
  81. 81. Part 2 Table of contents REQUIREMENT • Requirements are crucial • Tips for avoiding feature creep DESIGN • Solution architecture design • UX design • Know your users • Basic UI design framework • Design principles and tips • Technical design
  82. 82. Source: Introduction to Usability, Nielsen Norman Group Learnability Efficiency Memorability Errors Satisfaction Usability is defined by 5 quality components:
  83. 83. Learnability Efficiency Memorability Errors Satisfaction
  84. 84. Ways to improve software learnability 1. Omit needless information 2. Make it quick to scan and find 3. Create clear visual hierarchy 4. Tell the user where they are 5. Progressive disclosure 6. Direct manipulation 7. Visualize 8. Provide guidance 9. Provide feedback 10. Be consistent
  85. 85. Omit needless information Omit needless words. Vigorous writing is concise. A sentence should contain no unnecessary words, a paragraph no unnecessary sentences, for the same reason that a drawing should have no unnecessary lines and a machine no unnecessary parts. — The Elements of Style No matter how cool your interface, less of it would be better. Alan Cooper Father of Visual Basic, Author of About Face
  86. 86. Omit needless information
  87. 87. Reduce the number of choices presented at any given time.1 1. Source: Office 2007 Design Tenets, Microsoft 2. Source: The Paradox of Choice, Barry Schwartz We should minimize the amount of choices a user has to select from. Removing any unnecessary pages, links, buttons or selections will make your designs much more effective and give less opportunities to users to make mistakes. The Paradox of Choice2 The more choices a person is presented with, the harder it is for them to choose. Reduce the number of choices
  88. 88. Make it quick to scan and find • Usually users are in a hurry. • We don’t read pages. We SCAN them 1. • Break up pages into clearly defined areas
 • Use scannable layout
 • Provide clear visual clues
 1. Source: Don’t make me think, Steve Krug
  89. 89. Create a Clear Visual Hierarchy Organize and prioritize the contents of a page by using size, prominence, and content relationships. Let’s look at these relationships more closely. The more important a headline is, the larger its font size should be. Big bold headlines help to grab the user’s attention as they scan the Web page. The more important the headline or content, the higher up the page it should be placed. The most important or popular content should always be positioned prominently near the top of the page, so users can view it without having to scroll too far. Group similar content types by displaying the content in a similar visual style, or in a clearly defined area. Create a clear visual hierarchy Create a Clear Visual Hierarchy Organize and prioritize the contents of a page by using size, prominence, and content relationships. Let’s look at these relationships more closely. • Size. The more important a headline is, the larger its font size should be. Big bold headlines help to grab the user’s attention as they scan the Web page. • Prominence. The more important the headline or content, the higher up the page it should be placed. The most important or popular content should always be positioned prominently near the top of the page, so users can view it without having to scroll too far. • Content Relationship. Group similar content types by displaying the content in a similar visual style, or in a clearly defined area. Clear visual hierarchy makes it easy to scan and find the information user wants.
  90. 90. Remove visual clutter The blue boxes above add no information but clutter. Below design communicates the same amount of information with less visual elements.
  91. 91. White space can give the design breathing room. Used correctly, it not only makes the content more legible/easier to read, but also makes the page elegant. Use white space
  92. 92. Tell the user where they are Breadcrumb tells the user where she is in the site’s hierarchical structure so that she can easily navigate to other parts.
  93. 93. Progressive Disclosure Progressive Disclosure is a simple yet powerful idea: 1. Initially, show users only a few of the most important options. 2. Offer a larger set of specialized options upon request.1 1. Source: Progressive Disclosure, Nielsen Norman Group 2. Source: Top Guidelines Violations, Microsoft Don’t hide commonly used items, because users might not find them. But make sure whatever is hidden has value.2
  94. 94. Progressive Disclosure LinkedIn shows more filters upon user’s request for people search.
  95. 95. Initial state Mouse hover Mouse click Progressive Disclosure Figure: Google Plus
  96. 96. Direct manipulation You can use direct manipulation to let users interact directly with objects using their mouse, instead of indirectly with the keyboard, dialog boxes, or menus.1 In this example user has to control indirectly the UI elements through pressing the physical keys In this example user directly manipulates the objects on the screen 1. Source : Designing with Windows Presentation Foundation, Microsoft
  97. 97. Visualize Image: http://en.wikipedia.org/wiki/A_picture_is_worth_a_thousand_words A picture is worth 1000 words
  98. 98. Microsoft Windows 3.x File Manager Microsoft Windows 7 File Manager Visualize — Numbers
  99. 99. Metaphors can make an application self-explanatory because they allow users to transfer existing knowledge to the application. This simplifies learning, relearning, and using an application.1 Visualize — Icons Delete Print Calendar 1 Source: Simplifying for Usability, SAP
  100. 100. Users don’t need to think what the chart or font is when they can see them before selecting them. Visualize — Previews
  101. 101. Visualize — Illustrations Basecamp uses these illustrations to explain what their products do. Image: basecamp.com
  102. 102. Visualize — Animations Show instead of explain. You can use animations and transitions to show relationships, causes, and effects. This technique is best used to provide information that would otherwise require text to explain or might be missed by users.
  103. 103. Guide users – standard help 
 Knowing how to perform tasks reduces its inherent complexity. • Standard Help is not suitable for the beginners.
 Standard online help is a poor tool for providing such beginner assistance. …its primary utility is as a reference, and beginners don’t need reference information; they need overview information, such as a guided tour. 1 • User shall be able to easily dismiss the help.
 To get beginners to a state of intermediacy requires extra help from the program, but this extra help will get in their way as soon as they become intermediates. This means that whatever extra help you provide, it must not be fixed into the interface. It must know how to go away when its services are no longer required. 2 • Don’t use help as the means to offset poor design. 
 If user has to resort to help document, rethink your design. 1. Source: About the face 3, Alan Cooper 2. Source: About the face 3, Alan Cooper
  104. 104. Guide users – Demo / tutorial Very few people take the time to read instructions. Figure: pixate.com
  105. 105. Guide users – Hint or Instruction Terminology and on-screen text should: 1. Use user-focused language. 2. Avoid jargon. 3. Avoid abbreviation. 4. We learn faster when vocabulary is task-focused, familiar, and consistent1 5. Keep the text short and simple. Omit needless words. 6. Design text for scanning, not immersive reading2 7. Shall be self-explanatory. 1. Source : Designing with Mind in Mind, Jeff Johnson 2. Source : How to Design a Great User Experience, Microsoft Get rid of half the words on each page, then get rid of half of what’s left. — Krug’s third law of usability
  106. 106. Guide users – Blank Slate Another aspect of the Mac OS X UI that I think has been tremendously influenced by [Steve] Jobs is the setup and first-run experience. I think Jobs is keenly aware of the importance of first impressions... I think Jobs looks at the first-run experience and thinks, it may only be one-thousandth of a user's overall experience with the machine, but it's the most important one-thousandth, because it's the first one-thousandth, and it sets their expectations and initial impression. — John Gruber, author and web developer
  107. 107. Guide users – Blank Slate Basecamp uses the blank slate to briefly explain what the product does and encourages the user to add a project.
  108. 108. Guide users – On-screen text In general, too much on-screen text is a bad practice because users tend to ignore them and they simply add visual noise. In some rare cases, however, they’re unavoidable.
  109. 109. Tooltip is a useful technique to simplify the UI. It shows information upon user’s request while keeping the UI free of clutter by default. Guide users – Tooltips
  110. 110. Guide users – Thoughtful defaults Setting a default value that works for most users in most cases is simple and safe. Most users are lazy and they won’t change it at all.
  111. 111. Provide feedback When user performs an action, the system should respond with visual changes (and/or other changes) to tell the users that something is happening, has happened or could happen. 1. Instant feedback (so that users know whether the action succeeded or failed) 2. Modeless feedback (so it doesn’t block other actions) Microsoft PowerPoint provides a modeless feedback while saving a document.
  112. 112. Be consistent Consistency makes an application easier to learn and use. Note: Consistency is a guiding principle, not the ultimate goal.
  113. 113. Learnability Efficiency Memorability Errors Satisfaction
  114. 114. About efficiency Usually intermediate and advanced users ask for efficiency. One must balance the needs with learnability. 1. Leverage human habits 2. Facilitate users • Fitts's Law • Keyboard shortcuts • Drag and drop • Command line UI • Batch actions • Auto-suggest • Inline editing
  115. 115. Leverage human habits Humans form habits after repetition; it is our natural tendency to learn tasks to the point where they become automatic. Jef Raskin HCI expert, starter of the Macintosh project Rule of thumb: 1. A stable system structure helps user form habits 2. Align with the habits that users already formed
  116. 116. Create a stable structure Source: 1.Office 2007 design tenets, Microsoft Give features a permanent home. Prefer consistent-location UI over “smart” UI.1 In Mac OS X, no matter what app you use, the toolbar is always at the top of the screen. Users don’t have to think where to find it.
  117. 117. Align with user’s habits It’s important to follow the conventions that had formed in the UI design history. Users are used to them. Violating them makes users confusing and frustrating. The primary action buttons are in different places on Mac OS and Windows. (Mac on the right and Windows on the left). Be sure to follow this rules when designing apps for these system.
  118. 118. Facilitate users — Fitts’s Law Make clickable areas large so they are easy to click. Basecamp makes sure users won’t miss the call-to-action button.
  119. 119. Facilitate users — Keyboard shortcuts (E.g. Ctrl C, Ctrl V) Accelerators — unseen by the novice user — may often speed up the interaction for the expert user such that the system can cater to both inexperienced and experienced users. Allow users to tailor frequent actions.1 1. Source: 10 Usability Heuristics for User Interface Design, NNGroup
  120. 120. Facilitate users — Drag and Drop Rich visual feedback is key to successful direct manipulation.
  121. 121. Facilitate users — Command Line UI Users can type msconfig in Windows command line to bring up System Configuration window, which is hard to find if looked for from the menu. Users can type about:flags in the Chrome address bar to bring up the configuration window.
  122. 122. Facilitate users — Batch actions Photoshop actions can improve productivity for those who repeatedly process pictures.
  123. 123. Facilitate users — Code completion Xcode can suggest the right function names base on what users type, which saves a lot of typing and reduces the mental energy needed to remember these names.
  124. 124. Facilitate users — Auto suggest As the user types input into a field, a drop-down menu of matching values is displayed. When done right, the choice that best matches will be auto- selected. The user can stop typing and accept the choice that has been matched or choose a different value from the list.1 1. Source: Designing Web Interface, Bill Scott and Theresa
  125. 125. When the conditions of a rule is met, actions that are defined by the user will be taken automatically. Facilitate users — Script, rule, macro, formula
  126. 126. Adobe Acrobat Reader will display a thumbnail as user scroll to help user quickly navigate through the pages. Facilitate users — Content preview
  127. 127. Flickr inline editor let user focus on the screen and won’t break the task flow. Facilitate users — Inline editing
  128. 128. Facilitate users — Provide different views The Calendar app in iOS 8 provides different views to look at appointments.
  129. 129. mint.com allows users to consolidate key information from different sources into one page. Facilitate users — Consolidate information
  130. 130. Facilitate users — Search v.s. Browse Both modes should be provided in applications. • Browsing is a structured way to find information. • Searching is a non-structured and more efficient way to find information.

  131. 131. Facilitate users — Visual editor Microsoft Visual Studio provides a UI editor for developers to create UI via drag-n-drop. The snap lines help users to align elements. This is a simple and powerful feature which makes the layout work really efficient.
  132. 132. Learnability Efficiency Memorability Errors Satisfaction
  133. 133. Our capacity for processing information is limited • Magical number 7 ± 2 • The activation of a information chunk is influenced by 3 different factors: Practice, recency and context. • Recognition rather than recall 1. 1. Source: 10 Usability Heuristics for User Interface Design, NNGroup ?
  134. 134. Bing has a link to the user’s search history. The link helps users remember previous searches. Make information more visible
  135. 135. When a user goes back to Amazon.com, the personalized homepage includes a list of recently viewed items. Make information more visible
  136. 136. Make information more visible People can quickly open recent documents in Microsoft PowerPoint. And the app will remember the last state too.
  137. 137. Auto-completion In this design, people don’t have to remember the exact state names.
  138. 138. Reminder Outlook will reminds people when a meeting is about to happen.
  139. 139. Learnability Efficiency Memorability Errors Satisfaction
  140. 140. Before error happens USER’S TASK FLOW ✕ Even better than good error messages is a careful design which prevents a problem from occurring in the first place. Either eliminate error-prone conditions or check for them and present users with a confirmation option before they commit to the action.1 1. Source: 10 Usability Heuristics for User Interface Design, NNGroup
  141. 141. Error prevention 1. Expect users to make errors when designing screens 2. Try to anticipate where they will go wrong 3. Provide good default values 4. Provide warning 5. Provide preview before taking actions 6. Use constraint to prevent the error
  142. 142. Provide Warning Alarm to warn against dangerous actions
  143. 143. Provide preview before taking the action MS Office -Print Preview Adobe – Filter effect Preview
  144. 144. Use constraints to prevent error The shape of the plugs are designed differently to avoid mistake. Disable functions if they don’t apply to current context to avoid mistake.
  145. 145. Tolerance for error Double-cut auto key is always right side up. Clothing iron shuts off automatically after 5 minutes of non-use. Undo allows user to correct mistakes without penalty. Google automatically corrects mis-spelling words.
  146. 146. After error happens USER’S TASK FLOW ✕ It’s an important time to explain to the users what happened and keep them on your website/service.
  147. 147. Provide constructive feedback • Don’t let user think it’s their fault • Effective error messages inform users that a problem occurred, explain why it happened, and provide a solution so users can fix the problem1. 1.Source: Error Messages, Microsoft
  148. 148. Make actions reversible MindMeister takes it one step further to record all user actions so they don’t need to worry about data loss and can easily reverse.
  149. 149. Learnability Efficiency Memorability Errors Satisfaction
  150. 150. Don’t forget the emotional needs • Tap into emotions like anger, frustration, love, loneliness, fear, pride, lust, etc 1 • Simple and beautiful design that perform the function well can invoke a positive and emotional response. • Make it visually attractive. Positive affect makes people more tolerant of minor difficulties and more flexible and creative in finding solutions. Products designed for more relaxed, pleasant occasions can enhance their usability through pleasant, aesthetic design. 2 1. Source of concept: Inspired, Marty Cagan 2 Source: Emotion & Design: Attractive things work better ,Don Norman
  151. 151. Part 2 Table of contents REQUIREMENT • Requirements are crucial • Tips for avoiding feature creep DESIGN • Solution architecture design • UX design • Know your users • Basic UI design framework • Design principles and tips • Technical design
  152. 152. Hide internal complexity to users • Obtaining simplicity while preserving power often requires significant internal complexity. • UI first. Don’t design UI to map with internal technical architecture. • Changes should be easy. • Separate presentation tier(UI) from logic tier and data tier
  153. 153. Performance, Scalability, Extensibility • Performance and scalability are key. • Offer the customer flexibility to customize the system. For example, providing APIs.
  154. 154. Quality of code • Functional correctness • Clarity • No duplication
  155. 155. ABOUT US Jim Liang Senior UX Designer, SAP http://cn.linkedin.com/in/jimliang Terry Wang Senior UX Designer, Amazon http://cn.linkedin.com/in/terrywang
  156. 156. Appendix What does "Simple" Mean? Source: Simplifying for Usability, SAP
  157. 157. Appendix What does “Powerful” mean ? Enabling The application satisfies the needs of its target users, enabling them to perform tasks that they couldn't otherwise do and achieve their goals effectively. Efficient The application enables users to perform tasks with a level of productivity and scale that wasn't possible before. Versatile The application enables users to perform a wide range of tasks effectively in a variety of circumstances. Direct The application feels like it is directly helping users achieve their goals, instead of getting in the way or requiring unnecessary steps. Features like shortcuts, keyboard access, and macros improve the sense of directness. Flexible The application allows users complete, fine-grained control over their work. Integrated The application is well integrated with Microsoft® Windows®, allowing it to share data with other applications. Advanced The application has extraordinary, innovative, state-of-the-art features that are not found in competing solutions. Source: “Powerful and Simple” , Microsoft
  158. 158. References Powerful and Simple, Microsoft
 http://msdn.microsoft.com/en-us/library/aa511332.aspx Simplifying for Usability, SAP
 http://www.sapdesignguild.org/resources/simplification/index.htm Don't Make Me Think: A Common Sense Approach to Web Usability, 2nd Edition, Steve Krug
 http://www.amazon.com/Dont-Make-Me-Think-Usability/dp/0321344758/ref=sr_1_1? ie=UTF8&qid=1288002208&sr=8-1 Secrets of Simplicity: rules for being simple and usable ,Giles Colborne 
 http://www.slideshare.net/cxpartners/secrets-of-simplicity The Laws of Simplicity (Simplicity: Design, Technology, Business, Life), John Maeda
 http://www.amazon.com/Laws-Simplicity-Design-Technology-Business/dp/0262134721/ref=sr_1_1? s=books&ie=UTF8&qid=1288002290&sr=1-1 7 Interface Design Techniques to Simplify and De-clutter Your Interfaces, Dmitry Fadeyev
 http://www.webdesignerdepot.com/2009/02/7-interface-design-techniques-to-simplify-and-de-clutter-your-interfaces/ About the face 3, Alan Cooper , Robert Reimann, David Cronin
 http://www.amazon.com/About-Face-Essentials-Interaction-Design/dp/0470084111 Progressive Disclosure
 http://www.useit.com/alertbox/progressive-disclosure.html
  159. 159. References Error Messages, Microsoft http://msdn.microsoft.com/en-us/library/windows/desktop/aa511267.aspx User Experience Design Principles, Microsoft http://msdn.microsoft.com/en-us/library/windows/desktop/dd834141.aspx Designing with Windows Presentation Foundation, Microsoft http://msdn.microsoft.com/en-us/library/windows/desktop/aa511329.aspx Top Guidelines Violations, Microsoft http://msdn.microsoft.com/en-us/library/windows/desktop/aa511331.aspx How to Design a Great User Experience, Microsoft http://msdn.microsoft.com/en-us/library/windows/desktop/aa511335.aspx Sites as Collections of Pages, Microsoft
 http://channel9.msdn.com/Learn/Courses/SharePoint2010Developer/UiEnhancements/SitesasCollectionsofPages Microsoft Solution Framework, Microsoft
 http://msdn.microsoft.com/en-us/library/dd380647.aspx
  160. 160. References UI Patterns and Techniques http://www.time-tripper.com/uipatterns/Requirement is crucial First Principles of Interaction Design, Bruce Tognazzini http://www.asktog.com/basics/firstPrinciples.html Ten Laws to Design By
 http://3.7designs.co/blog/2010/07/ten-laws-to-design-by/ Short-Term Memory and Web Usability, Jakob Nielsen http://www.useit.com/alertbox/short-term-memory.html UI Pattern
 http://www.patternry.com/ Six And Half Philosophies for Design & Innovation, Alex Zhu
 http://www.slideshare.net/mylonelyhouse/six-and-half-philosophies-for-design-innovation-presentation Multitier architecture
 http://en.wikipedia.org/wiki/Multitier_architecture How To Be A Good Product Manager http://www.goodproductmanager.com/2009/01/15/differentiate-to-avoid-being-a-me-too/
  161. 161. References Principles of user interface design, wikipedia http://en.wikipedia.org/wiki/Principles_of_user_interface_design The Paradox of Choice: Why More Is Less, Barry Schwartz http://www.amazon.com/Paradox-Choice-More-Less-P-S/dp/0060005696 Designing with the Mind in Mind, Jeff Johnson http://www.amazon.com/Designing-Mind-Simple-Understanding-Interface/dp/012375030X/ref=sr_1_1? ie=UTF8&qid=1325227439&sr=8-1 INSPIRED: HOW TO CREATE PRODUCTS CUSTOMERS LOVE, Cagan, Marty http://www.amazon.com/Inspired-Create-Products-Customers-Love/dp/0981690408/ref=sr_1_1? ie=UTF8&qid=1325320164&sr=8-1 Photo Credit: high wire 2
 http://www.flickr.com/photos/gee01/871748702/ Photo Credit: grocery shelf http://blog.authenticfoods.com/wp-content/uploads/2010/08/Henrys-Grocery-Shelves.jpg

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