A standard e-lock or electronic seal reports one thing: open or closed. That tells an ops team nothing about whether the open was supposed to happen. A trailer unlocked at its declared destination and a trailer unlocked at an unscheduled stop twenty minutes before arrival look identical in most systems - both just say "opened."
That gap is where cargo theft and pilferage actually happen - not through dramatic lock-breaking, but through a quiet, unscheduled stop that the lock itself has no way to flag as wrong. By the time a shipper notices a shortfall at delivery, the trail is already cold.
The other common failure is speed. A tamper sensor that reports an hour late, or only on the next check-in cycle, is reporting history - not preventing a loss. Safe Logistics exists to close both gaps: knowing what "normal" looks like for this specific trip, and saying so the moment something deviates from it.