Table 1.
Build phase study samples.
Table 2.
Tools/Protocols used during in-depth qualitative research.
Table 3.
Design specification criteria.
Table 4.
Example theory of change.
Table 5.
Outline of methods used by phase of study.
Table 6.
Types of existing handwashing products.
Table 7.
Design priorities for a handwashing solution.
Fig 1.
A research participant ranks the products by the most modern (left) to the least (right). (Left to right: Happy Tap, Sanitap, Oxfam bucket, Accordian, Supertowel, Oxfam + nagmagic, Spatap).
Fig 2.
An image of an idea generation activity within the design sprint.
Fig 3.
An overview of the development of 5 chosen concepts as initially sketched (top), physically prototyped (middle) and adapted in field (bottom). From left to right, concepts are Personal Soap, Liquid Soap, Cup, Tab Soap, Soap Shaker/Grater.
Table 8.
Concept development matrix following each of the five concepts from their inception in the design sprint through to the end of the prototype field testing.
Table 9.
Prototype field visit ranking exercise.
Table 10.
Household rankings for prototypes that were most likely to be used for handwashing.
Table 11.
Major reflections on 3 final prototypes.
Fig 4.
Sketches of the roll (left) and the stacked tear and share (right) form factors of Tab Soap.
Table 12.
Tab soap form factor analysis.
Table 13.
Design criteria for the tab soap.
Fig 5.
Drying of hand-made tab soap strips that were used for the field trial.
Fig 6.
Tab soap form factors in situ during field trial.
The left image shows the roll soap within a home. This version can be hung (e.g., on a nail) or placed on a counter. The right image shows the tear-and-share version mounted on a nail in a shop.
Fig 7.
Example of weekly images from the soap seller.
Images here show (from left to right): the roll dispenser, the remaining soap on the spool, the new roll of soap wrapped around the spool and the electronics within the spool.
Table 14.
Soap use per household member each week.
Fig 8.
Tab soap theory of change.