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Title: Trust Enhanced Ubiquitous Payment without Too Much Privacy Loss
Author: Seigneur, Jean-Marc
Jensen, Christian D.
Keywords: Ubicomp
Issue Date: 26-Aug-2004
Publisher: Trinity College Dublin, Department of Computer Science
Citation: Seigneur, Jean-Marc; Jensen, Christian D. 'Trust Enhanced Ubiquitous Payment without Too Much Privacy Loss'. - Dublin, Trinity College Dublin, Department of Computer Science, TCD-CS-2004-37, 2004, pp8
Series/Report no.: Computer Science Technical Report
Abstract: Computational models of trust have been proposed for use in ubicomp environments for deciding whether to allow customers to pay with an e-purse or not. In order to build trust in a customer, a means to link transactions using the same e-purse is required. Roughly, trust is a result of knowledge. As the number of transactions increases, the resulting increase in knowledge about the user of the e-purse threatens privacy due to global profiling. We present a scheme (and its prototype) that mitigates this loss of privacy without forbidding the use of trust for smoothing payment by giving the opportunity to the user to divide trust (i.e. transactions) according to context (e.g. location, user’s current activity or subset of shops).
Description: The final version of this paper appears in the proceedings of the 19th ACM Symposium on Applied Computing. (
Appears in Collections:Computer Science Technical Reports

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