When value is greater than money: A micropayment system in Uganda

Rasmus Prentow, Rasmus Steiniche, Simone D. Johansen, Jeni Paay, Ivan Aaen, Jesper Kjeldskov

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2 Citations (Scopus)


The Pay-E-Safe system is a token-based car battery powered electronic micropayment system for emerging markets in East Africa. This is the story of how it was developed with different ethnic groups in Kasese, Uganda, combining methods from HCI, software development, and business modeling. We created a system that is inexpensive to implement, sensitive to the Ugandan context (e.g. low incomes, unreliable power supplies and unstable Internet connections) and provides benefits to local vendors as well as added value to users and their families. Using observations, interviews and prototype evaluations with local Ugandans we studied people's spending behaviors and then explored alternative design solutions with them. Along the way, we discovered that a micropayment system could actually add value to the user experience beyond the exchange of money for services. This case study reports on how we designed the system and the additional value it afforded users.

Original languageEnglish
Title of host publicationCHI 2015 - Extended Abstracts Publication of the 33rd Annual CHI Conference on Human Factors in Computing Systems
Subtitle of host publicationCrossings
PublisherAssociation for Computing Machinery (ACM)
Number of pages8
ISBN (Electronic)9781450331463
Publication statusPublished - 2015
Externally publishedYes
EventInternational Conference on Human Factors in Computing Systems 2015 - Seoul, Korea, South
Duration: 18 Apr 201523 Apr 2015
Conference number: 33rd
https://dl.acm.org/doi/proceedings/10.1145/2702123 (Proceedings)

Publication series

NameConference on Human Factors in Computing Systems - Proceedings


ConferenceInternational Conference on Human Factors in Computing Systems 2015
Abbreviated titleCHI 2015
Country/TerritoryKorea, South
Internet address


  • Developing countries
  • Electronic payment system
  • Field studies
  • Prototyping
  • Qualitative research

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