The sign should be placed so that people notice the surveillance before they walk into the covered zone, at roughly eye level. Camera positions need not be revealed so long as there is no doubt which areas are monitored and the context is unambiguous; people must be able to judge what a camera captures so they can avoid it or adapt their behaviour.
This control maps to 1 controls across 1 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 1 it maps to, and the evidence behind each claim, over MCP and REST.