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 |