Corruption is endemic in emerging economies, where many transactions of private citizens with government institutions require payment of bribes. The Bribecaster web application enables citizens to report and consume corruption information about dealing with government offices. Bribecaster uses a novel privacy-preserving implicit login schema and one-way hashing for protecting user identities while simultaneously ensuring the accuracy and integrity of reports. This citizen-induced transparency

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... cilitates rational social and individual responses to corruption. Participants in our first-use user study of Bribecaster rated the system highly for its usefulness.