Six patrol records. Three physical patrols.
Development site: six patrol records, but only three physical patrols.
- Building
- Active development site, Ontario (anonymised)
- Period
- One 12-hour shift
- Environment
- Construction
- For
- Owners, boards and developers, Security leads and guard companies, IT and procurement reviewers
What the building was facing.
A 12-hour shift had eight contracted 90-minute patrol windows. Six logs were submitted, and the surface coverage report showed 69.23%. On paper, that was an imperfect but plausible night.
From signal to record.
01
Reconstructed the route from the order and timing of every scan.
02
Compared scanning times with filing times for each log.
03
Measured how far apart consecutive scans were in time.
What changed.
The six logs contained three continuous scan sequences, about 62 minutes of scanning in total.
Three filings were delayed by 1 hour 43 minutes to 1 hour 58 minutes, landing in later coverage windows.
Consecutive scans were 0 to 2 minutes apart, which is consistent with continuous walking, not separate rounds.
Six records existed. Deeper analysis indicated three physical patrol sequences. A database record and a contracted patrol are not necessarily the same thing.
What this case shows