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Table 3 Surveillance and security technologies per examined critical infrastructure

From: Surveillance and security: protecting electricity utilities and other critical infrastructures

Type Technologies Water utility Electricity utility Refinery
Visual surv. Video X X X
  Imaging X X  
  Photography   X  
Biometrics Physiological X   X
Communication surv. Cyber security X X X
  Physical X X X
Location tracking Proximity sensing X   
  Triangulation X X  
Dataveillance Cyber surv. X X X
  Data analysis X X  
Ubiquitous surv. Embedded sensors X X