CASE STUDY: SEVA
This project covers the iterative design + testing process of an on-demand maintenance application for Caltech's onsite wastewater treatment technology.
Cody Finke (Lead Developer/Investigator)
Michael Hoffmann (Principal Investigator)
Clément Cid (Investigator)
Anastasia Hanan (Design + Research)
Bill and Melinda Gates Foundation
Our target user is a non-engineer in India that may have low levels of technical expertise and/or literacy.
In 2015, our team won first place in the Vodafone Wireless Innovation Challenge ($300K).
We have designed and iteratively tested our app in three different rounds (remotely and on-site) and are currently moving into development - see Invision prototype used for testing.
Patent for Technology: Self-Diagnosis and Maintenance Guide for Non-Sewered Sanitation Systems
Our tech will only be successful if we can also provide a maintenance plan.
Low cost maintenance may require building information for users with low technical skill and diverse literacy rates.
The greatest challenge for design will be around identifying parts (pictures and parts may update independently) and information design for over 122 regional languages in India.
APP DESIGN AND TESTING PROCESS OVERVIEW
V1 DESIGN DECISIONS
Material design aesthetics for simplicity, longevity, and android majority
Images not video for data usage (no longer as relevant in 2019)
Symbols match IRL parts to in APP images
V1 USER TESTING
On site interviews (in sanitation units) with partners in two locations near Coimbatore, India.
Beta prototype in Invision.
Translator fo non-English speakers.
Can users complete the basic flow?
V2 USER TESTING
Remote user testing. We did initial testing via usertesting.com, but felt that users were too "trained" (we got too positive of responses). As an alternative, we instead sourced participants ourselves and completed testing using lookback.io
Testing navigation through information architecture by asking users to complete tasks.
Phase 1 was completed in 2014 and helped inform app design above
Phase 1 Design Informed by Ethnography: