If I divide the facilities related to security, I think roughly as follows.

  • A simple facility that is large enough for one or two people to fit in and avoids the cold and wind.
  • It’s a simple facility, but it’s as big as sitting or having a desk. (if it is not fixed regardless of whether it is actually moving)
  • Similar to the above, but fixed, if it is a building and has furniture, etc. for administrative purposes. (In some cases, there is also a resting facility or sleeping facility.)
  • A building in which the entire building is used for security and security-related affairs. (security wing)

From what I’ve looked at, I think this concept is mixed up in OSM wiki right now.