Keys, codes and what happens when they change
Access on an unmanned site depends on a physical key, a code or a credential, and all three fail in predictable ways. Keys get lost or are not returned when staff change. Codes are altered by the occupier without notice. Credentials expire. Each failure produces a missed attendance and a conversation that could have been avoided with a documented process.
The process is short: who holds access, how it is stored, who is notified when it changes, and what happens if entry fails on the night. That last point matters most. An attendant who cannot get in needs a documented action, whether that is calling a nominated number or logging the failure and departing, rather than improvising at ten at night. Recording the process in the proposal, rather than agreeing it verbally, is what allows a relief attendant to follow it without a phone call.
