KeyCrime’s field trials have been executed over a lengthy time period and on a large scale in order to ensure long–term sustainability and repeatability of outcomes in different seasons and environments:

  • First field trial – covering the City of Milan for a period of 11 years (2008-2019) (KeyCrime software)
  • Second field trial – covering the Province of Milan for a period of 10 years (2009-2019) (KeyCrime software)
  • Third field trial – covering the City of Milan and the Province of Milan starting in the 3rd quarter of 2019 (delia® software)

After working in field trial with the KeyCrime solution, Milan’s Questura (main police station) migrated to a field trial of delia® which includes advances in software architecture, user interface and, most importantly, improvements in the crime linking engine. Initial results have been promising, with positive feedback received from the Questura after the initial months of use.

The results of the testing were recorded and, during the field trials, all the documentation was evaluated by the Italian Ministry of Justice and also by the University of Essex to ensure that the evaluation would be fully objective. The test results (confirmed by the evaluators) have proven the effectiveness of the solution in fighting crime.

More precisely, according to the reports, the field trials have showed that the deployment of KeyCrime’s prototype software has led to:

  • The reduction of crime, by ca. 58% in the city of Milan in the period 2008-2019 for commercial robberies and by ca. 89% in the province of Milan for bank robberies in the period 2009-2019.
  • The rate of crimes solved increased from ca. 10% per year in the city of Milan for commercial robberies and from ca. 25% per year in the province of Milan for bank robberies to ca. 60% per year for the period 2008-2019 for the city of Milan and 2009-2019 for the province of Milan.
  • Before 2008, robberies in Milan were increasing much more than in other cities (see table below). After 2008, robberies start decreasing much more than other cities. The variation in the trend is equal to 3.7% per month. – from more than 1.9% per month to less than 1.8% per month (data taken from a Research carried out by OSSIF related to bank robberies only – Italian Centre of Research for ant-crime policy)

The results achieved in Milan are the subject of a study by the Essex University Department of Economics

The study highlights the positive repercussions of the application of delia®️’s approach in the socio-economic field and the results have been presented at multiple conferences including the National Bureau of Economic Research Summer Institute in Boston in 2016 (Crime is Terribly Revealing: Information Technology and Police Productivity). The study was recently published by the Oxford University Press’s publication, “The Review of Economic Studies (REStud)” after a peer-review process.