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In this case, we can talk about the functionalities, depending on the crime indicators that individual crime maps offer. Based on their comparison, it can be stated that some crime maps represent a greater added value, whether for the police, local governments or residents. 2.1. Case of the Slovak Republic In 2013, the Ministry of the Interior of the Slovak Republic published a map of criminal offenses in SR (Figure 1). The map shows the number of crimes in individual police districts with a percentage of clarified crimes [10]. The information is freely available to the general public (residents), who can choose either general crime or a certain type of crime (economic, property, moral, violent) for a certain period (quarter, half- year or year) [11]. Figure 1. Map of crimes in Slovakia, the year 2020 [10] However, this map brings with it some shortcomings that can distort the real state of crime. First, we can mention the fact that the map works with absolute and not relative data [12]. This means that the crime map shows the overall status and not the level of crime, which results in the absence of a crime rate. The map has up to 12 categories of crimes, each with a different color. Clarification rate is expressed as a percentage rounded once to two decimal places and once to six. Somewhere the character "%" is listed and somewhere it is missing. Based on these facts, the map can have a misleading, chaotic and confusing impression [11]. 2.2. Case of the Czech Republic The primary reason for the creation of this application was the need to share the content of information processed by the Police of CZ to locate crimes and administrative offenses with the public and self- government entities in CZ. The application thus combines in one place information on the occurrence of offenses registered by the Police of CZ so as not to violate the personal data protection of victims, their secondary victimization as well as violation of personal data protection of persons suspected of committing a crime [13]. DSS Vol. 2, May 2021, pp.53-62 55 The application contains basic data on administrative offenses and selected types of crimes that were reported by the Police of CZ in the selected period or which were registered by the Police of CZ through its activities (Figure 2). At the same time, only data containing location information is displayed (display of data from 2013). The application displays those types of crime in which the disclosure may be preventive and their disclosure does not hinder the tactical aspect. The type is e.g., property, violent crime, extremism, drug crime, etc. In the case of administrative offenses, the scope of the data is not limited in this way [13]. In the application, any user can view or export spatial data on the occurrence of offenses registered by the Police of CZ for the territory of CZ or individual municipalities in the territory of CZ. This information may be further shared or used following the license for the creation of other technical means intended for crime prevention in CZ [13]. Figure 2. Display of the crime of the Ostrava police district [13] The primary reason for the application was the need to share the content of information managed by the Police of CZ to locate crimes and administrative offenses with local government entities (with a focus on municipalities) in CZ. In this case, local governments, with a focus on municipalities, are considered to be an authorized user who has access to the basic functionality intended for the receipt, evaluation, analysis and sharing of published data, not only by the Police of CZ [13]. The content cards also include clear statistics within the territorial division of the municipality (Figure 3), optimization of the map for the selected location, insertion or user overview of individual offenses within the scope of the municipality and others [13]. Figure 3. composition of criminal activity within a specific municipality of CZ [adopted from 13] 0 0 15 0 4 31 2 15 7 0 16 0 5 10 15 20 25 30 35 Extremism Weapon Addiction Traffic accident Generally dangerous Property others Fraud Theft Burglary Fire, explosion Violence Composition of criminal activity in the municipality DSS Vol. 2, May 2021, pp.53-62 56 2.3. Case of United Kingdom The crime map website displays open data on crime and policing in England, Wales and Northern Ireland (Figure 4). The user is provided with data on crime, individual police forces or neighborhood patrols through an interactive map. Furthermore, you can easily download this data in CSV format to your PC [14]. There is also room to download data on police activities over a period and a range of other data related to police activities, including the apprehension of the perpetrator or the processing of emergency calls. All information on this website is made available under the Open Government License [14]. Figure 4. Crime in the city of London [14] The data displayed by the web application provides a complete overview of crime level overview (Figure 5), type of crimes (Figure 6), the results of criminal proceedings and data on reports or searches that are statistically reported for a specific period. Published statistics are updated monthly, with the possibility of downloading data from the archive from 2013 [14]. Figure 5. Display of the seasonal state of the crime of the examined locality [14] Figure 6. Display of the number of selected types of crimes of the locality [14] DSS Vol. 2, May 2021, pp.53-62 57 2.4. Case of Germany The crime map shows brief information on the crimes, perpetrators and victims available for each region of the sixteen Länder of Germany (Figure 7). Each region is assigned a specific color, which provides an initial indication of the crime rate per 100,000 inhabitants, with the rule that the darker the color, the greater the crime burden. Within the structure of crime, selected types of crime are statistically processed, such as murder and homicide, rape and sexual assault, robbery, motor vehicle theft, drug offenses and others [15]. Figure 7. Interactive map of Germany - initial display of crime rate [15] After selecting a specific area in the interactive map or the appropriate coat of arms of a specific area, the system generates a PDF document [15] that contains statistically processed data, presented in the form of graphs (Figure 8, 9) and tables (Table 1). Table 1. Development of the number of crimes and their clear-up rate in the Bavaria region [adopted from 15] Year Crime total Clear-up rate [%] Registered Explained 2013 635 131 406 873 64,1 2014 650 868 419 482 64,4 2015 805 915 584 128 72,5 2016 882 473 581 860 65,9 2017 629 512 420 440 66,8 DSS Vol. 2, May 2021, pp.53-62 58 Figure 8. Graph of percentage distribution of crime in the Bavaria region by age in 2017 [adopted from 15] Figure 9. Graph of crime development by nationality of the offender region of Bavaria [adopted from 15] 2.5. Case of the United States of America A project to map crime in US was developed to help police and law enforcement reduce the level of crime. Through better information of the population about the current state of crime in the vicinity of their residence, there is a subjective perception of crime, which can reflect the real values of crime. This fact represents the creation of greater self-confidence among the inhabitants of one defined area, who can help reduce the level of crime by their activity [16]. Crime data are obtained at regular intervals from the registration system of individual police departments, which results in the possibility of displaying the most currently available data. The extraction, processing and presentation of data are preceded by their verification, while they are generalized by blocking to ensure their protection and at the same time, they cannot be misused [16]. The interactive map offers a series of search criteria, which are used to specify the search for specific incidents of the defined space for the selected period (Figure 10) [16]. Figure 10. Showing specific incidents in Oakland, California from 01/04/2021 to 01/31/2021 [15] 3% 8% 11% 78% Percentage distribution of crime by age Child (up to 14 years old) Minor (14 - 18 years old) Mladistvý (18 - 21 years old) Adult (21 years and older) 198240 189090 179802 180344 173401 91569 113896 281500 266089 129401 0 100000 200000 300000 400000 500000 2013 2014 2015 2016 2017 Development of crime according to the nationality of the offender German Other The presenta selection of tabular outp department, different typ Figure 11 The statistic as PDF docu 2.6. Case of The crimina provided by recorded und criminal bur population o The portal th  disp  the crim  the f  depi  com  disp Figure 12. G ation of the criteria usin put, it is poss date and ti pes of inciden 1. 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We developmen d support the selected area f this display ct location o ion increase es or isolated be displayed protection o As part of the local (urban e smaller the this case, the mportant. d reduces the splayed using yed area, the e number o ed by 10,000 2 f e s y, s d f f e e 0 e e s e nt e a. y f s d d f e n e e e g e f 0 DSS Vol. 2, May 2021, pp.53-62 62 or 100,000 [21]. The inhabitant can thus find out the level of crime in the space of which he is a part, which can represent for him the added value of the output of the display of crime [20]. For the needs of the police, law enforcement and self-government, the added value of the output lines in the point representation of the crimes of the assessed area. The presentation of data in this form opens the space for the application of targeted and effective security measures, which can actively contribute to reducing the level of crime, which can ultimately positively affect the perception of crime by the population. Acknowledgments This article was supported by the institutional grant project UNIZA Interactive Map of Offenses of the Selected Site KOR / 1041/2020 References [1] J. Tomasek, Introduction to criminology: How to study crime, Bratislava: Grada Publishing, 2010. [2] R. Kmet and Z. Dvorak, "Information system for evaluating the level of crime in a selected region " in Proceedings of the 2nd year of the Scientific Conference of Doctoral Students at the Academy of the Police Force in Bratislava, 2019. [3] L. Hofreiter and A. Byrtusova, Safety indicators. 1st edition, Zilina: EDIS, 2016. [4] C. D. Daniyar, P. Pihuave. et al, "The map of the victims. Pertinence of the composed cognitive maps in the analysis of the criminal situation from a small territory perspective," Politica Criminal, vol. 15, no. 30, pp. 840-870, 2021. [5] J. C. T. Arroyo, A. J. P. Delima, M. Y. 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[16] TriTech Software Systems, "Crime Mapping" San Diego, California, 2021. [17] L. Salvioli et al., "Crime rate" Sole 24 Ore processing of data from the Public Security Department – Ministry of Interior. Rome, 2021. [18] L. Gaspierik, Prevention of crime and other anti - social activities, Kosice: Multiprint, 2010. [19] T. Van der Heijden and E. T. Kolthoff, "Crime Analysis as a Tool for Crime Control" Proceedings of the first International Crime Analysis Conference. Haag: CIP-Gegevens Koninklijke Bibliotheek. 2010 [20] R. Kmet and Z. Dvorak, "Crime index as one of the main indicators of safety" MEST Journal. vol. 8, no. 1, s. 57-64, 2020. [21] K. Holcr at al., Criminology. 1st edition, Bratislava: Iura Ed, 2008.