Produce images or recordings for surveillance purposes, and can be either video cameras, or digital stills cameras.
Records video in a digital format to a disk drive or other memory medium within a device.
Enables an authority to control access to areas and resources in a given physical facility or computer-based information system
Refers to methods for uniquely recognizing humans based upon intrinsic physical or behavioral traits. Used to identify individuals in groups that are under surveillance.
mainly used in government agencies, customs, airports, stations, stadiums, exhibition venues, entertainment, large gathering places, etc.
Radio that can both transmit and receive (a transceiver), unlike a broadcast receiver which only receives content.
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