MEX: Christophe Ramstein - Achieving great tactile experience is a subtle art - 19th/20th May 2009

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Achieving Great Tactile Experience is

a Subtle Art

Mobile User Experience 2009



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?”



§

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?



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



Haptically-Enabled User Interfaces

LG

Samsun

Logitech Driving Force

Interactive UI

RevolutionizeEnhance UX

Realistic

Lexus

BMW, iDrive

Orthopedic

Sensable

Surgical Simulator



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

–

?



Touchscreen AdoptionBroad Range of Applications and Screen Sizes

Source: iSuppli May 2008

U n i t s i n M



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



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.



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



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



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



Content Creation

§

Effects – Basic effects

– FPS effects

– Emotion – just tactile

– Ringtones

§Design guidance – Sub-woofer approach

– Silent approach

– Synchronization

– Less is more

–



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?



Christophe’s Haptic Manifesto

§Revolutionizes the UX

§Synchronizes with sight, sound and

gesture§Replaces mechanical buttons



“ Touch comes before sight, and beforespeech. It is the first language and the last, andit always tells the truth.”

—Margaret Atwood

Documents

MEX: Christophe Ramstein - Achieving great tactile experience is a subtle art - 19th/20th May 2009