The latter often involve complex relay and multiplexer systems. However, the Series 9000 access control system uses a standard personal computer's serial port to communicate with other devices. Video cameras near the alarm point can be activated by the computer, as can telephone notification systems or any other device using serial communications. Surveillance, Recording Secure installations often use CCTV systems to monitor, and often record, everyday activities, usually in time-lapse. While videotapes have been used to apprehend and convict criminals, the tapes themselves are increasingly under attack in the courts due to the increasing sophistication of video editing.
Defendants are prone to claim such videotapes inaccurate.
Thus, analog video recording systems are better for security purposes than more advanced, but more easily edited, digital cameras. This does not mean the end of CCTV systems, however. An important aspect of the CCTV system is tape storage. Bringing It Together Designers must also consider how a security system is to be integrated. Security forces must communicate.