1. PRESENTATION In a modern society there are different types of surveillance systems from cctv cameras to biometric readers. In this power point presentation We have studied some of the most used alarm and surveillance systems.

2. Modern technology is able to keep people under surveillance in many different ways.

3. Biometric readers: Identification of people throught DNA, fingerprints, eye strycture or facial feactures.

4. CCTV cameras (closed circuit TV): 24 hour observation of people in streets, shops and public buildings; images are stored.

5. Credit cards: Records of what people have bought, how much they spent, when and where they were.

6. GPS (global positioning system): Vital data for navigation systems but can also be used for tracking vehicles or people.

7. Hidden cameras and listening devices (called bugs): Information from traditional spying tecnhogy, now minaturised and harder than ever to detect.

8. Mobile phones: Records of calls made, who to, where and when.

9. Public transport travelcards: Records of passengers journeys: times, arrivals, destinations.

10. RFID tags (radio frequency identification): Identification and tracking of products in shops and warehouses; can also be incorporated into identity cards and even injected into animals and people.

11. Satellite photography: High-resolution images from above of land and buildings.

12. Vehicle recognition/speed cameras: Identification of passing cards; used for automatic payment on motorwayes, in carparks etc.