AI-Powered CCTV Monitoring System

I need an AI system integrated with a CCTV surveillance system to identify specific activities in real-time. The system should send brief notifications to the owner via mobile app based on the identified activities.

The AI should be able to identify:
- Suspicious behavior
- Crowd gatherings
- Unattended objects

Key requirements:
- Real-time activity recognition
- Mobile app notifications
- No storage or long-term analysis, live monitoring only

Ideal skills and experience:
- Expertise in AI and machine learning
- Experience with CCTV and surveillance technology
- Mobile app development skills
- Knowledge in real-time data processing and notification systems

Please ensure the system is reliable and can accurately differentiate between the specified activities.