In the past couple of years, the advancement of smartphone technology and increased use of smartphones among individuals have provided new means to criminology researchers and practitioners to observe public spaces and to crowdsource data on crime. Criminologists recently started utilizing Ecological Momentary Assessments (EMAs), an innovative data collection method commonly used in health sciences, to collect context-specific data on individuals’ fear of crime. This lecture will include a short review of these recent studies that utilize EMAs to collect real-time data on fear of crime and perceived risk of crime at places. It will conclude by discussing the prospects of this methodology for future research and practice in Criminology.