Journal of Data Processing Anton Gradišek, Maja Somrak, Mitja Luštrek, Matjaz Gams 9 4 2019 https://doi.org/10.6025/jdp/2019/9/4/101-106 http://www.dline.info/jdp/fulltext/v9n4/jdpv9n4_1.pdf The Qualcomm Tricorder XPRIZE competition began in January 2012, with the goal of developing a mobile device to monitor health parameters and quickly diagnose several common medical conditions. In August 2014, a list of ten finalists was announced, including a Slovenian team MESI Simplifying diagnostics that brings together companies MESI, D·Labs, and Gigodesign, and partners from academia, Jozef Stefan Institute and Faculties of Electrotechnics and Medicine of the University of Ljubljana. In this review, we present the XPRIZE competition, we briefly look at the ten finalists and more closely at the MESI Simplifying diagnostics approach. Special attention is given to the diagnostic algorithm that was developed in order to facilitate the diagnostic process.