Porting the Pay with a (Group) Selfie (PGS) Payment System to Crypto Currency

Ernesto Damiani, Perpetus Jacques Houngbo, Joël T. Hounsou, Rasool Asal, Stelvio Cimato, Fulvio Frati, Dina Shehada, Chan Yeob Yeun

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

2 Scopus citations

Abstract

Pay with a (Group) Selfie (PGS) is a novel payment system developed at Khalifa University in the UAE, and currently under test at the Institut de Mathématiques et Science Physique (IMSP) in Benin. The PGS system uses a group selfie to gather all information items needed to encode a purchase: the seller, the buyer, the service/product and the agreed price. Using Visual Cryptography (VC), the photo is then “digitally ripped” into two shares, one for the buyer and one for the seller. In the current version of PGS, these shares are eventually and independently sent to a Bank that cooperates to offer the digital payment service to population living in rural areas. When the purchases of a buyer at a given seller pass a pre-set threshold, the Bank executes a traditional fund transfer between the two. This way, PGS spreads the Bank’s transfer fee over multiple purchases, decreasing the financial cost of each purchase. This paper discusses the challenges of transparently coupling the PGS payment system with digital wallets holding a crypto currency, bringing the financial cost of each purchase to zero.

Original languageBritish English
Title of host publicationEmerging Technologies for Developing Countries - 1st International EAI Conference, AFRICATEK 2017, Proceedings
EditorsRachida Dssouli, Hamid Harroud, Max Agueh, Fatna Belqasmi, Faouzi Kamoun
PublisherSpringer Verlag
Pages159-168
Number of pages10
ISBN (Print)9783319678368
DOIs
StatePublished - 2018
Event1st International Conference on Emerging Technologies for Developing Countries, AFRICATEK 2017 - Marrakech, Morocco
Duration: 27 Mar 201728 Mar 2017

Publication series

NameLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
Volume206
ISSN (Print)1867-8211

Conference

Conference1st International Conference on Emerging Technologies for Developing Countries, AFRICATEK 2017
Country/TerritoryMorocco
CityMarrakech
Period27/03/1728/03/17

Keywords

  • Crypto currency
  • Payment metaphors, mobile payment systems
  • Trust
  • Visual Cryptography

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