Security Technology, Communications, and Surveillance Systems
This domain tests whether you can run cameras, access-control systems, and radios without creating a legal problem or losing the evidence they produce.
CCTV and privacy law
RA 10173 (Data Privacy Act) applies to personal information captured on camera. Cover only areas where surveillance is justified, post clear notices, restrict access to footage, and set a defined retention period. Never place cameras in restrooms, changing rooms, or other private spaces. Audio capture is a separate issue: RA 4200 (Anti-Wiretapping Act) penalises secretly recording private conversations, so most CCTV should be video-only unless a lawful basis exists.
Evidence from systems
When police request footage, ask for a written request, export a working copy, record the time range and camera identity, keep the source untouched, and log the handover. Deleting or overwriting footage after an incident can be treated as spoliation and destroys your credibility.
Access-control technology
Cards, PINs, and biometrics each fail differently: cards are shared, PINs are observed, fingerprints fail on wet or damaged hands. Logs from these systems are evidence - check them for out-of-hours entries, repeated failed attempts, and door-held-open alarms. A 'door forced' alarm with no response is a false sense of security.
Radio discipline
Use plain language, not codes that other agencies cannot follow. Learn prowords: Roger, Wilco, Over (invite reply), Out (end, no reply), Say again, Standby, Correction. Identify yourself and the post, keep transmissions short, and never use a radio to share personal data or a person's name over an open channel when it can be avoided. Give times in 24-hour format.
Worked example
A fight is reported near the loading bay. The guard radios: 'Control, Post 4, requesting supervisor at loading bay, two persons fighting, one injured, over.' He does not say names or medical details on air. Later, the supervisor requests the camera covering the bay for 21:00–21:15, exports a copy, and logs it.
Traps that cost marks
Recording audio covertly; handing over the only copy; filming private areas; using force-related codes nobody else understands.