Ubipay: conducting everyday payments with minimum user involvement

Abstract

As services embedded into public spaces become increasingly transparent, one peripheral aspect of use continues to demand explicit user attention: payment. UbiPay is a system that carries out small everyday payments in a way that minimises user involvement by choosing an interaction method based on context information. The aim is to make paying like breathing: something we are only peripherally aware of unless we exert our resources beyond the usual. This idea has powerful implications for business and design.