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The goal of a novel design: will be better at meeting the needs of the users than the existing design

Prototype: an early model of the novel design; manage resources; iterate on the design

  • Low fidelity prototypes- bear little similarity to the final design in either form or function

  • High fidelity prototypes - are very similar to the final design in form and function

What will be prototyped?

  • Horizontal prototype

    • To model breadth of design features (How all features are being featured in the interface)

  • vertical prototype

    • To model a few features in-depth (Two of the most important features)

Low fidelity prototyping

  • It is quick and easy and helps verify design objectives (for ourselves, colleagues, and stakeholders)

  • Paper prototyping

    • Sketching

    • Storyboarding (how the users are going to interact with the design in the given scenario)

    • Card-based (look at the sequences of interactions; 5 cards of the steps/interfaces/interactions)

High fidelity prototyping

  • Use HFP when low fidelity prototyping no longer supports our design objectives

  • Designer

    • General software

    • User interface prototyping tools

      • Build out the 5 screens/interfaces designed in the card-based exercise

      • Go to the play store of your choice and look up a similar app and consider what to do to incorporate the design features into the preexisting app

Other prototyping techniques

  • Wizard of Oz

    • Mimic functionality of a product by having a human performing the task usually performed by the computer

    • The user is not aware that the product is not functioning

    • Has advantages to save time and money when compared to building a functional system/product

    • Disadvantages as considerable time is required for this to work appropriately; always requires multiple people to operate including a well-trained "wizard"; users may have unrealistic expectations for the system.

  • Proof of concept video

    • A fictional video that shows a working system in a variety of scenarios

  • Metaphor development

    • Help user build a mental model of how a new design functions

    • Communications the functionality of the novel design by comparing to artifacts or systems the user knows

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Formative evaluation conducted early on in the design process with low-fidelity prototypes Summative evaluation conducted with high-fidelity prototypes or final interface The type of data we collect i

Review of Design Goals

Core Concept of UXD: Users use an interface to complete a task Improved user experience for the...... Individual user: phone Group users: social media apps Society: culture values involved in the task


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