User-Centric Design of Series 40 Apps

Series 40 Touch and Type Webinars 2012

UX for Location Based Services

1 © Nokia 2012 User-centric-design-of-Series-40-apps.pptx v. 0.1 2012-05-02 Jan Krebber

Overview


• What to take into account when designing for mobile • Methods to estimate your own location • Transform technical data into information for people

• Basics • Showcase ”Radar”

• Series 40 UX design tools • Take home messages

UX considerations


Three mobile mindsets: - bored - microtasking - local


(Josh Clark)

Your application’s target audience is on the move, not in the comfy chair.


Your application will be used with thumbs only.


Use the fastest UI component, not the fanciest one.


Do not overload your screen.


Allow privacy.


Location estimation


Cell ID might not represent the nearest mobile network antenna.


Time Difference of Arrival and Angle of Arrival require special networks.


TDOA AOA

AOA and TDOA work indoors but always with limited precision.


GPS might require too long time for the first fix – too long for the impatient.


Wi-Fi triangulation can work locally indoors and with high precision.


Landmarks and urban marks can offer precise location data.


D

Dead reckoning is only as good as the initial lock and errors sum up.


RFID tags can deliver a high accuracy for an initial lock or for refinement.


RFID tags also work as electronic leashes.


For other navigation methods it might be a long way into the phone.


Combine navigation methods for fast aquiring and refining navigation.


Showcase RADAR


Assumptions for a new feature:


Main use cases: - Send an image link to somebody located close to you - Choose 1 or 2 recipients out of multiple

Available data: - Dynamic distance to other people - Dynamic direction to other people - Phone connection to other people

This sounds like a Radar.


Learn to step back and observe the whole thing. What does the user need?


Do not overload the screen.


Transfer raw location data into a simple context – not a fancy context.


The left shows an area with many people, the middle shows the representation in a phone, but the phone screen is too small to show all the content and something has to be cropped, the right image shows a simple list.

Transfer raw location data into a simple context – not a fancy context.


The left shows an area with many people, the middle shows the representation in a phone, but the phone screen is too small to show all the content and something has to be cropped, the right image shows a simple list.

Utilize relative positions and orientation to sort results.


Tina and Jo are in front of me, so they are likely to be the ones I am interacting with, Qing and Tom are behind me, so thet are not likely to talk to me but somebody else.

Test early and often. Fail fast and cheap.


Series 40 UX design tools


Create high fidelity paper prototypes with Illustrator, Fireworks or Inkscape.


Create a launcher icon for a positive first impression (AI, PS, Inkscape).


Take a look into the style guides to maintain Series 40 look and feel.


The UX checklist helps you avoid the most common design mistakes.


Take home messages


Your application’s target audience is on the move, not in the comfy chair.


Learn to step back and observe the whole thing. What does the user need?


Use our services to improve the overall rating of your application.


Links


http://www.developer.nokia.com/Resources/Library/Design_and_UX/#!designing-for-nokia-platforms/designing-for-series-40-touch-and-type.html - Style guides - Icon creation - Stencil sets http://www.developer.nokia.com/info/sw.nokia.com/id/515ca91b-1160-4841-a1f7-ca821c21b81e/UX_Checklist_for_Series_40.html - UX Checklist

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Credits

•Anne Kivimaa •Sanna Häiväläinen •Sami Ronkainen •Philip Wamsley

Thank you.


Technology

User-Centric Design of Series 40 Apps