Yes, real-time monitoring of user behavior can be achieved by modifying the source code of the mobile application. This usually involves the following steps: 1. **Obtaining source code**: First, you need to obtain the source code of the mobile application. This may involve decompiling an existing application, especially if the source code is not available. 2. **Modifying source code**: After obtaining the source code, you can modify it to add the function of monitoring user behavior. This may include recording user clicks, inputs, usage time, etc. 3. **Recompile and deploy**: After modifying the source code, you need to recompile and deploy the application to run on the phone. 4. **Data collection**: Once the application is running, the modified code can collect user behavior data in real time and send it to the server or store it locally. However, it should be noted that this practice involves multiple legal and ethical issues: - **Privacy issues**: Monitoring user behavior usually violates the user's privacy rights. Users need to clearly know that their behavior is being monitored and give consent. - **Legal risks**: In many regions, monitoring without user consent may violate laws and regulations, such as the General Data Protection Regulation (GDPR). - **Ethical issues**: Even if it is technically possible, companies or individuals who conduct such monitoring must consider their ethical responsibilities. In short, although it is technically possible to monitor user behavior in real time, such operations require very careful consideration of legal and ethical issues.