IndexIntroductionCctv and surveillance CCTV (closed circuit television)CCD. Mostly five types of CCTV or surveillance camerasDome cameraBullet CCTVC-Mount CCTVNight Vision CCTVCCTV cameraPTZFingerprint or thumb scanningReferencesIntroductionForensic technique and equipment or instrument suitable for examination and anti-forensic method and theory and such technicality, equipment and instrument are called science proactive forensics. Proactive forensic science is used in collecting evidence. Which is used in the examination or investigation. And evidence storage, for example: we need to keep our data, evidence and files confidential so that no one can interfere with the data. It is used to find evidence with The number of crimes in the world is increasing day by day, and the technique to identify these criminals or find criminals, such as: thumb scan, breath analyzer, CCTV and surveillance, iris scan, QR code scanning, Tera Heartz rays, retinal scanning, proactive digital forensics (PDF) and so on and those who use tools and techniques and come under proactive forensic science. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay In the near future, it may also be possible that criminals will use different types of crime, similarly, new techniques and tolls will be invented in proactive forensic science. Various types of methods used for proactive forensic analysis: Breath analyzer Voice identification CCTV camera/Surveillance Scanner (explosives, narcotics scanner) Tera Heartz rays Proactive Digital Forensic (PDF) QR code Biometric identification ➢ Iris scanning ➢ Finger scanning Fingerprints and thumbprints ➢ Face scanning ➢ Retina scanning Computer forensics Mobile forensics CCTV and Surveillance CCTV (Closed Circuit Television) Surveillance is a device that records, stores and displays any type of activity that occurs in a company, in a shop, in a shopping center, in a hospital, in a park, in a public place, in an airport, in a station, at intersections or any other place. CCTV photos and disk archive can be viewed using computer to acquire complete information. A camera is made up of a series of lenses. The overall function of a lens is to refract light from a source and focus it. At some point he gets his image. But in CCTV cameras the light is focused onto a Charge Couple Device (CCD) which records the light electronically. The semiconductor and CCD used in CCTV cameras measure light with the help of photosites (light sensitive diode). When light (photons) hits photosites at specific points, they transform into electrical charges. To create a colorful image, the CCD directs the levels of each color of light. The CCD measures the color level of blue, red, yellow. And can reproduce a color image.CCD. Mostly five types of CCTV cameras or surveillance dome cameras. The dome camera is mounted on the roof or ceiling. It is used indoors. The bullet camera is fixed to the wall. It is used outside the home. Mounted CCTV bullet camera is used to make high-quality recordings and is used in factories, shopping malls, large stores, etc. C-mount CCTV It is a type of camera that combines infrared radiation with 7000 -1000 nm wavelength with CCD camera, and the resulting night image is displayed as a monochrome image on a computer monitor screen. Night Vision CCTV Pan-Tilt-Zoom commonly known as robot or camera]