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Achieving Great Tactile Experience is
a Subtle Art
Mobile User Experience 2009
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Manifesto Statement
“We believe … the tactile nuances of mobileproducts are of much greater importance tocustomers than the industry realizes. Adding a
touchscreen does not automatically equate tobetter user experience. The overall customerexperience will be enhanced through acombination of touchscreens, additional touch-enabled surfaces, haptics, and introducing newmaterials for device casings, buttons andaccessories. Agree or disagree?”
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§
What is haptics? How does it compare tosight and sound? What is digital haptics?
§Hardware interface versus digital haptics?
§How does haptics enhance the overall UX ina mobile device?
§How can UI designers and developers
leverage haptics?
§What are the design guidelines?
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The Anatomy of Touch
§ Haptic includes cutaneous,
kinesthesia, proprioception
§ Touch is the largest sensor
§ Requires contact
§ Haptic intimate withmotor control
§ Touch reinforces sight and
sound
§ Touch is Profound - groundfor reality and immediacy,humanity and emotion
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Haptically-Enabled User Interfaces
LG
Samsun
Logitech Driving Force
Interactive UI
RevolutionizeEnhance UX
Realistic
Lexus
BMW, iDrive
Orthopedic
Sensable
Surgical Simulator
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Touchscreen Pros & Cons
§
Pros –Maximizes ergonomic design
–Direct/natural manipulation
–Reconfigurable user interface
–Enables new functionalities
§Cons/challenges – Typing
–Visual occlusion –Responsiveness (lag)
–Relevant haptic feedback
–
?
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Touchscreen AdoptionBroad Range of Applications and Screen Sizes
Source: iSuppli May 2008
U n i t s i n M
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Use of Digital Haptics
§New dimension in the design space
§ Touchscreen navigation and typing
§Ringtones, emoticons and gaming
§Material properties
§ Tangible messaging and communication
§Enables new metaphors and paradigms
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Tactile FeedbackImproves Touchscreen Performance
Average % CorrectAverage
Vibration level( /s)
Vibration level( /s)
Users received tactile or audio feedback in increasingly bumpyenvironment Tactile feedback outperformed visual with/without audio in every case,
Source: Hoggan, E., Crossan, A., Brewster, S., Kaaresoja, T., ‘Audio or Tactile Feedback: Which Modality When?’,Proceedings of ACM CHI 2009, pp. 2253-2256.
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Value of Digital Haptics
§
Programmable§ Immediacy – compared to sight and sound
§Reinforces sight and sound
§Brings authenticity and realism
§Ground for emotion
§Sufficient for visually-occupied uses
§Sufficient for silent uses
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Challenges of Digital Haptics
§Synchronization/lag
§Hardware buttons cheap and efficient
§COGS, motor selection and mounting
§ Towards multi-touch surfaces
§Currently vibro-tactile, introduce kinesthetic
feedback§SDK and authoring tools
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Design Tools for Haptics
§
Design effects andexperience in real-time
§Shape the parameters – Amplitude, frequency,
duration and shape
– Composition
§Synchronize with
sounds§Desktop vs. mobiletools
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Content Creation
§
Effects – Basic effects
– FPS effects
– Emotion – just tactile
– Ringtones
§Design guidance – Sub-woofer approach
– Silent approach
– Synchronization
– Less is more
–
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Button Confirmation
§Simple and short, but noticeable
§ Transient vibration
§
Mechanical-like, or not§One effect per type of key
§Subtle, for long time use
§Strong for obvious alert
§And how about navigation?
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Christophe’s Haptic Manifesto
§Revolutionizes the UX
§Synchronizes with sight, sound and
gesture§Replaces mechanical buttons
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“ Touch comes before sight, and beforespeech. It is the first language and the last, andit always tells the truth.”
—Margaret Atwood