certain areas. Physical and psychological boundaries Offender and victim alike are both restrained by physical boundaries such as rivers, lakes, oceans or highways. Psychological boundaries may also affect movement, for example a black offender may not travel into a white neighborhood for fear or being identified. Land use Neighbourhood demographics Certain offenders prefer a certain ethnicity of victim, if so then he may hunt in different neighborhoods affecting spatial crime patterns. Routine activities of victims Understanding the routine of a victim may provide insight into how the offender searches for his victims. Singularities Displacement Incorporating these factors in a profile can lead to a geographic pattern where it sheds light on an offender's mobility, method of transportation, ability to navigate boundaries and most importantly, the possible residential location. It is important to recognize such spatial intentionality, to determine the offender's comfort zone and their desire to commit crimes in locations where they feel a sense of familiarity. However, the reality may be more complex since an offender may have multiple spatial anchor points, such as home, workplace or the residence of their significant other. Tools Geographic profiling is an investigative tool that can be seen as a strategic information management system to assist police with the large volume of information throughout an investigation. It concentrates its focus on the geographic aspects of the crime and was developed in response to the demands of solving serial crimes. In response, Rossmo developed a computerized geographic profiling algorithm called criminal geographic targeting (CGT) which assess the spatial characteristics of crimes. It analyzes the geographic coordinates of the offender's crimes and produces a color map which assigns probabilities to different points for the most likely area of the offender's home base. CGT has been patented and integrated into a specialized crime analysis software product called Rigel. The Rigel product is developed by the software company Environmental Criminology Research Inc. (ECRI), which Rossmo co-founded. Geographic Profilers often employ tools such as Rigel, CrimeStat or Gemini to perform geographic analysis. System inputs are crime location addresses or coordinates, often entered through a geographic information system (GIS). Output is a jeopardy surface (three-dimensional probability surface) or color geoprofile, which depicts the most likely areas of offender residence or search base. These programs assist crime analysts and investigators to focus their resources more effectively by highlighting the crucial geographic areas. Geographic Profiling Analysis (GPA) training Geographic profiling is