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Participatory Sensing (PS) is an approach that offers individuals and interest groups the opportunity to contribute to an application using their handheld sensor devices such as smartphones and tablets. These sensor devices are able to sense, collect available data and use cellular and Internet communication infrastructure such as LTE and WiFi to transmit the data to the application server. The application server processes the collected data and makes the data available to the end-users. Participant contributions consist of sensor data, location, date and time. In addition, PS applications usually need to collect additional data about participants such as identity, age, gender and contact. Notwithstanding the numerous benefits the PS approach brought to the application domain, there are two main challenges that threaten the success of PS: data trustworthiness and participant privacy. The additional data collected from …