Purpose: The purpose of this research is to reviewing and analyzing the legal consequences for the act of wiretapping using a GPS Tracker without authority by consumer finance companies on cars subject to fiduciary collateral. Method: The research methodology normative legal research, the data required in this research is primary data in the form of statutory regulations and secondary data in the form of books, scientific papers and other supporting documents that have relevance to the research being conducted. The data analysis techniques used in the research This is by using a qualitative descriptive analysis method. Results and conclusion: Based on a literature review and regulatory analysis, this research identifies the act of wiretapping by installing a GPS Tracker carried out by Consumer Finance Companies on fiduciary collateral objects that are used by consumers without the consumer's knowledge, which if the consumer finds out later, then of course this will cause problems because consumers feel their privacy is disturbed. Due to this action, consumers can submit demands/lawsuits to BPSK in each district/city, even though in reality not all regions have BPSK institutions to resolve disputes between consumers and consumer finance companies due to lack of government attention. Research implications: The findings of this research have implications for policy makers, the business world, and other stakeholders in understanding the act of wiretapping by installing GPS Trackers carried out by Consumer Finance Companies on fiduciary collateral objects that are used by consumers without the consumer's knowledge, which if the consumer later finds out, So of course this will cause problems because consumers feel that their privacy is being disturbed. and the potential solution to this action is that consumers can submit demands/lawsuits to the BPSK located in each district/city. Originality/value: This research contributes to the existing literature by focusing on the intersection between consumers and consumer financing companies regarding the fiduciary security object of interception of GPS Tracker installations used by consumers without the consumer's knowledge.