As part of Chiba University's Post Urban Living Innovation program, the present research focuses on a Design Against Crime process with the goal of improving the levels of fear of crime and the general crime situation of a local Mexican urban community. As part of a crime prevention intervention, the prototype of a community-based security system is conceptualized, tested, and evaluated by both community members and criminal offenders in order to provide insight for the further development and future long-term implementation of the proposed system and its various elements.