A mobile device for use by a health care recipient in countering phantom billing fraud in connection with receiving health care services. A sensor bank comprises components capturing and outputting biometric data corresponding to the health care recipient and components capturing and outputting location data of the health care recipient. A sensor fusion component receives the biometric data and the location data and determines a confidence score that a particular user indicated by the biometric data was at a particular location indicated by the location information. An event record creator compiles the location data, the biometric data and the confidence score to create an event record evidencing the whereabouts of the health care recipient at a particular time. A data storage device stores the event record indicating when the particular user was at the particular location based upon the confidence score, a timestamp at which the biometric data and location data are captured, the biometric data and location data such that the stored event record evidences the whereabouts of the health care recipient at a time indicated by the timestamp.