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Field evaluation of a mobile location-based notification system for police officers

Author: Streefkerk, J.W. · Esch-Bussemakers, M.P. van · Neerincx, M.A.
Institution: DenV
Source:10th International Conference on Human-Computer Interaction with Mobile Devices and Services, MobileHCI 2008, 2 September 2008 through 5 September 2008, Amsterdam, Conference code: 75021, 101-108
Identifier: 241152
doi: doi:10.1145/1409240.1409252
Keywords: Field testing · Longitudinal evaluation · Mobile computing · Notification systems · Police · Situation awareness · Field testing · Longitudinal evaluation · Notification systems · Police · Situation awareness · Computers · Human computer interaction · Knowledge management · Location · Mobile computing · Mobile devices · Portable equipment · Law enforcement


To increase police officer awareness of incident locations, the Dutch police developed and implemented a location-based notification system (LBNS). This mobile service notifies police officers proactively to warrants, agreements and police focal points in their current vicinity. To assess the accuracy, efficiency, effectiveness and user experience of this service, a longitudinal field evaluation was conducted with thirty police officers over four months. The results show that using the LBNS, police officers were better informed of relevant information in their environment and this led to positive operational results. Users considered the interface clear and easy to use. However, users indicated that the system presented too many or non-relevant notifications and that the system is overly complex. Recommendations for further development of the LBNS are to mitigate unwanted interruption by intelligent filtering of notifications and integration of system components. © 2008 ACM.