BREVILLE BARISTA EXPRESS ESPRESSO MACHINE - M3 Design Heuristic Evaluation www.m3design.com +1.512.218.8858
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BREVILLE BARISTA EXPRESS ESPRESSO MACHINE M3 Design Heuristic Evaluation www.m3design.com +1.512.218.8858 December 2013
CONTENTS
• Introduction
What, why, and how?
• Evaluation Summary
Overview of evaluation and final scoring
• Strengths & Opportunities
Key takeaways of evaluation
• Evaluation Data Reference
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 2
INTRODUCTION
M3 heuristic analysis process
What is a heuristic evaluation?
A heuristic evaluation is an usability assessment tool that M3 utilizes early in product development. It helps researchers,
designers and engineers identify usability problems related to how the product functions and interacts with the user. The
evaluator meticulously inspects the product and judges its compliance to predetermined usability and design criteria – the
heuristics.
Why is it useful to you?
M3 heuristic evaluation serves 3 key purposes:
1. Learn from your competition – a method to create head-to-head comparisons to your competition, and understand the
pros and cons of each product
2. Improves decision making - allows the development team to quickly and thoroughly understand how well a product
performs to establish usability and design criteria for new product concepts
3. Concept evaluation tool – a highly efficient scoring tool used to assess multiple concepts during development to
objectively rank concept alternatives
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 3
INTRODUCTION
M3 heuristic analysis process
How does it work?
M3 experts analyze a product against 9 evaluation criteria divided into 3 key stages . Each criteria is evaluated on a 5 point
scale based on how the product behaves and what it communicates to its user. The results indicate how close to the 5-point
optimum the product is designed from a human-centered perspective.
01 02 03
Refer to “Evaluation Data Reference” section for detailed explanation of each stage and its associated criteria
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 4
HEURISTIC EVALUATION
Breville Barista Express Espresso Machine
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 5
HEURISTIC EVALUATION
Breville Barista Express Espresso Machine
If you are serious with your coffee, you
know over-priced coffee shop chains just
won’t cut it for you. There are lots of
coffee / espresso machines out there
covering the whole gamut of budget, to
allow such users to create their own ideal
concoction at home.
The problem is, if you’re not paying
someone to make your coffee, then there
is one major drawback that DIY baristas
must face – dealing with the prep and
cleanup. The ritualistic process can be
fun, but highly involved to setup, and
time-consuming to clean up. If the
machine is poorly considered, the whole
experience is simply not worth the effort.
M3 has chosen to evaluate a mid-level
semi-automatic espresso machine, to see
if it’s worth giving up the long lines at the
coffee shop.
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 6
EVALUATION SUMMARY
Breville Barista Express Espresso Machine
EVALUATION SUMMARY USABILITY & DESIGN CRITERIA SCORE *
IMPRESSION Initially, the product could be seen as intimidating, but there’s no denying the fact that the look and AESTHETICS 4
feel is very appropriate to its intended function. The product appears to be reliable and serious at
what it does. Once the key parts of the product have been identified, operation seems to be SIMPLICITY 4
straightforward, and simple. Use of basic terminology around the product further embraces the
notion of function over pure styling. LANGUAGE 5
ENGAGEMENT Overall usability is good, but not outstanding. Basic functionality is obvious and simple, but some APPROPRIATENESS 3
finer details beneath the surface were falling shorter than the rest of the product. Having that said,
the product does offer many flexible options to cater for a wide range of users with very specific taste FLEXIBILITY 5
preferences. All buttons and dials provide exceptional user feedback.
FEEDBACK 5
EXPERIENCE All basic controls and key functions are simple and resettable / cancellable. Program is probably the ERROR PREVENTION 4
only complex function buried from the user, but that could be interpreted as an advantage since it’s
not really necessary, and certainly simplifies the overall experience. The product is impressively RECOVERY 4
designed and engineered, with a consistent design story, and many well thought out touches.
CONSISTENCY 4
* Scoring System
1 = Does not meet minimum usability and design considerations
2 = Meets barely the minimum usability and design considerations
3 = Meets minimum usability and design considerations
4 = Meets most of the usability and design considerations
5 = Meets optimum usability and design considerations
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 7
EVALUATION SUMMARY
Breville Barista Express Espresso Machine
Final Average Score
4.2 (out of 5)
M3 Heuristics
Product meets most of the usability
and design considerations
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 8
STRENGTHS
Key elements that should be embraced or improved upon
• Bright silver metal appearance gives it
that professional look and feel
• Exposed burr grinder is very cool to see
and conveys a sense of seriousness
• Outstanding feedback on all user
controls and dials
• Use of clear and straightforward lingo on
all labels and markings
Use of clear and concise language on all labels and markings Positive feedback on all touch-points enhances user experience
• Simple printed pictorial instructions on
the product for less commonly used
feature sets
• Large lead-in ramps for easy installation
of water tank
• Hidden “delights”, such as the “Empty
Me!” indicator, and the storage tray
inside of product
If touch-point is not in direct line of sight during use, ensure features Hidden surprises like the convenient tool storage tray delights the
are in place to optimize the interaction experience user
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 9
OPPORTUNITIES
Key elements that should be reconsidered and redesigned
• Program function should be easy to use,
and easy to remember how
• Grind size numbering should not be
cryptic, and should be meaningful to
experienced and novice users alike
• Avoid mismatch of silver colors,
materials, and finish treatments
• Tamper feels cheap in comparison to
rest of product – should be nicely Avoid functions that require a sequence of multiple key presses, Try to be specific when defining a numbered scale system – e.g. if 1
weighted to encourage a proper tamp especially when such keys are not clearly labeled. to 10, what does 6 mean?
• Hopper design should have a front
facing element, so it’s easier to key into
the burr grinder
• Consider a better catch tray for the
ground coffee to minimize waste
• Consider adding context to what
minimum and maximum mean on dials
Beware of different materials that could lead to mismatch of colors Ensure accompanying accessories share the same build quality and
and finishes. attention to detail as the main product on offer.
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 10EVALUATION DATA REFERENCE
01 IMPRESSION
Evaluation Guidelines
The impression stage of a product experience in where the product conveys its look, feel and
functional details. At this stage users formulate an overall perception of the product. This is
where certain judgments are made about the perceived level of simplicity or complexity, and
initial assessments of how usable the product is for it’s intended use.
AESTHETICS SIMPLICITY LANGUAGE
Conveys appropriate look & feel - functional form and Overall perception of product, visibility of information, and Use of natural and logical words, labels, meaningful colors,
purposeful details level of complexity in terms of product interaction and logical interactions
Considerations: Considerations: Considerations:
• What does the overall appearance say to you? • Does the product details convey a sense of simplicity? • Does the product communicate its use and operation
• Is the form appropriate for its intended purpose? • Is the product over-loaded with complex and confusing in simple easy-to-understand terminology?
• Is it “form follows function” or “style over substance”? details? • Are the touch-points all well labeled and identified in a
• Are product information (e.g. brand, labels, buttons) logical concise format and language?
clearly visible and readable? • Are the product colors telling you something?
• Does the product guide you through its use and
operation?
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 1201 IMPRESSION
Evaluation Worksheet
AESTHETICS
Conveys appropriate look & feel - functional form and purposeful details
-
• Authentic look and feel – a shrunken down model from the coffee • Slight material color mismatch
shop • Full metal enclosure, but the top cup warmer is a painted silver plastic
• Purposeful form is leaning forward towards user to convey a sense of part, which seems rather unfortunate, and cheap
invitation and ready for action • Brushed metal enclosure attracts a lot of greasing finger print marks
• Product is and feels heavy, and therefore feels expensive • Some part lines are not aligned properly
• High quality brushed metal / chrome finish looks reliable and heavy • Tamper handle does not share the same design language as the
duty portafilter handle
• Spun-finished buttons show attention to detail, and communicates • Unlike the product, the tamper feels light and cheap in comparison
premium product
• Seeing the exposed burr grinder as you open the box is fun and cool,
and speaks to the seriousness of the product
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 1301 IMPRESSION
Evaluation Worksheet
SIMPLICITY
Overall perception of product, visibility of information, and level of complexity in terms of product interaction
-
• Labeled controls and dials are very simple, and easy to understand • First impression of product looks professional , but is perceived as
cluttered and complicated to operate at the same time
• Water tank handle is hidden from view
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 1401 IMPRESSION
Evaluation Worksheet
LANGUAGE
Use of natural and logical words, labels, meaningful colors, and logical interactions
-
• Simple straightforward common lingo used on all control labels • Confusing term used on pressure scale – what is “Pressure”?
• Confusing term used on pressure scale – what is “Pre-Infusion”?
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 1502 ENGAGEMENT
Evaluation Guidelines
The engagement stage sets out to assess specific characteristics of the product in use. Users at
this stage judge how well it feels and functions in relation to its intended use. This is where users
assess the object’s ability to provide feedback, and adapt to changing users and/or
environmental conditions.
APPROPRIATENESS FLEXIBILITY FEEDBACK
Interaction is in context and relevant to the product - Use of product is efficient and adaptable, based upon Product communicates its intentions at all times in regards
conveys a sense of familiarity and appropriate mental different users and environmental influences to its state, mode, action, status, mistake and error, etc.
model
Considerations: Considerations: Considerations:
• Does the way the product is used and operated make • Does the product adapt to your needs, or do you need • Does the product validate and confirm all interactions
any logical sense in its given context? to adapt to the product? during use?
• Does the product feel appropriate and relevant during • What happens if more than one person uses the same • Does the product notify the user on operation status?
use? product? • Does the product notify the user when there’s an error?
• Can the product work efficiently under other intended • How does the product notify the user when a mistake
environments and scenarios? has been made?
• Does all touch-points communicate its state and
intentions?
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 1602 ENGAGEMENT
Evaluation Worksheet
APPROPRIATENESS
Interaction is in context and relevant to the product - conveys a sense of familiarity and appropriate mental model
-
• Huge lead-in features make re-attaching the water tank a breeze • Tamper label is positioned at 45 degrees facing down from the user –
• Magnet holding the tamper in place is simple and effective easy to miss for taller user
• Heavy and solid product - no need to hold down product as the • Minimum and maximum settings on dial is meaningless for first time
portafilter gets tightened users
• Storage tray hidden inside product is convenient and useful • Hopper has no “front face” indication - difficult to install the hopper
• The molded finger loop on the plug allows easy removal from the wall when re-attaching
outlet • Questioning the extra plastic separator tray – why do you need it?
• Rubber finger loop on steam outlet nozzle is useful and effective • Additional steps - would you really need the razor tool when you have
• Screen-printed picture instructions on the water tank to remind users the tamper ? Marketing?
how to replace filter (a thoughtful reminder since this is done once • Activating the grinder with the portafilter on the push click switch does
every 2 months) not map over to how commercial products work – could be confusing
for the expert users
• The narrow and long water tank could be difficult to refill in smaller
sinks
• The water tank handle / cover is too stiff to pop-up
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 1702 ENGAGEMENT
Evaluation Worksheet Continued
APPROPRIATENESS
Interaction is in context and relevant to the product - conveys a sense of familiarity and appropriate mental model
-
(Continued from previous page..)
• Programmable cup size adjustment is complicated to do and difficult to
remember
• Can be messy – ground coffee spills out from the portafilter on to tray
and tabletop
• Questionable fine / coarse grind size numbering system
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 1802 ENGAGEMENT
Evaluation Worksheet
FLEXIBILITY
Use of product is efficient and adaptable, based upon different users and environmental influences
-
• Love the manual grind option to suit personal preferences • No temperature gauge
• Grind size adjustment • Multiple hoppers for different types of coffee beans would be nice
• Grind amount adjustment
• 1 cup and 2 cup options + custom adjustable
• Pressure gauge readout makes it easier to achieve consistent results
• Highly adjustable steam outlet nozzle
• Comes with various filter cups for different styles of coffee
• Removable hopper for easy storage of unused beans
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 1902 ENGAGEMENT
Evaluation Worksheet
FEEDBACK
Product communicates its intentions at all times in regards to its state, mode, action, status, mistake and error, etc.
-
• Excellent audible and tactile feedback on all buttons and all dials are • No temperature feedback indication
nicely weighted • No indication of grind amount on the dial
• Grinder outlet holder “sucks in” the portafilter as it gets inserted
• The hard stop feel after the portafilter is inserted into group head
• Storage tray deployment is smartly considered and engineered
• Appropriate rumble sounds during brewing and steaming to indicate
the product is running
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 2003 EXPERIENCE
Evaluation Guidelines
The experience stage sets out to assess a products ability to deal with or avoid error conditions.
Users at this stage assess its ability to correct its mistakes. Finally, this stage is where users
judge how well the product delivers consistency across its user touch points and performance.
ERROR PREVENTION RECOVERY CONSISTENCY
Product prevents problems before it happens Ability to correct mistakes - reversible actions and states Consistent delivery of Aesthetics, Language, Relevancy,
and Feedback
Considerations: Considerations: Considerations:
• How well does the overall product prevent user error • Is it possible to recover from the mistake? • Is the overall look & feel and context of use
from happening? • How easy is it to correct the mistake? consistently conveyed throughout the product(s)?
• How easy does the touch-points allow mistakes to be • Is the use of language, icons, and colors consistently
made? delivered on the product(s)?
• Does all the interaction/ touch-points share the same or
similar usability story?
• Does the product consistently provide meaningful
feedback no matter what and where the user is
interacting?
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 2103 EXPERIENCE
Evaluation Worksheet
ERROR PREVENTION
Product prevents problems before it happens
-
none • Confusion with how to activate the cleaning mode
• Confusion with how the “program” button works
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 2203 EXPERIENCE
Evaluation Worksheet
RECOVERY
Ability to correct mistakes - reversible actions and states
-
• Most key functions and settings are resettable and cancellable • Cannot deactivate 2 cup brewing option once selected
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 2303 EXPERIENCE
Evaluation Worksheet
CONSISTENCY
Consistent delivery of Aesthetics, Language, Relevancy, and Feedback
-
• Clear product branding and labeling of controls and indicators • Touch-point color story slightly confusing – black or silver?
• Consistent design language, conveying the brand spirit and portfolio • Slight mismatch of materials and finish treatments used on the
• Excellent feedback that is consistently delivered on the product enclosure
• Impressive attention to detail, and delightful to use
M3 Design Copyright 2013 www.m3design.com December 2013 - Breville Barista Express Espresso Machine 24Heuristics
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