This issue involves ethical and legal considerations at multiple levels. 1. **Legal liability**: According to data protection laws in different countries and regions, such as the Privacy Act in the United States and the General Data Protection Regulation (GDPR) in the European Union, it is generally illegal to collect and use personal information without the consent of individuals. These laws are intended to protect personal privacy rights and require explicit consent before collecting data. Therefore, if you do this in the applicable area of the law, you may face legal liability. 2. **Ethical responsibility**: Even if permitted by law, collecting and analyzing personal information without personal consent may cause serious ethical disputes. From an ethical perspective, personal privacy is an important right, and data collection without consent will be regarded as an infringement of personal dignity and autonomy. 3. **Social impact**: When implementing such prediction and prevention of crime, the potential impact on society also needs to be considered. For example, this practice may lead to discrimination or prejudice against specific groups of people, or cause a lack of social trust. 4. **Alternatives**: Consider seeking more appropriate methods, such as using anonymized data, or collecting data under a transparent and compliant framework, so that the purpose of crime prevention can be achieved without infringing on personal privacy. Overall, although your motivation may be for public safety, collecting and analyzing personal information without consent may raise both legal liabilities and involve profound ethical dilemmas. It is recommended to consult legal experts and fully consider the ethical framework before embarking on relevant projects.