The following are Minimum Security Requirements for IFRC residences and offices.
Lock types
Primary locks are the main lock on a door and have a handle. Secondary locks are stronger locks, like a deadbolt or a sliding bolt that reinforce the primary lock by securing the door into the floors. Door chains and padlocks are not considered adequate secondary locks (for our purposes here).
Main Doors
Main doors open to the outside. All main doors must be solid and have a strong frame. Make sure all main doors are of good quality - not just the front door. All main doors must have a primary and a secondary lock. The front door should also be equipped with an optical viewer or peephole (that gives a clear 180 degree view) to see who is outside without opening the door. A door chain is not sufficient as a secondary/auxiliary lock and provides a false sense of security. Avoid sliding glass doors unless they have a metal grille installed with a heavy lock on the inside.
Metal-Grille Doors
If the main door(s) are equipped with a solid metal-grille, then a good quality high-security padlock is acceptable as a secondary lock. Warning! steel-grille doors can easily trap residents inside in the event of fire, so make sure that keys are easily accessible near and always present on the inside near the front door.
Bedroom and Bathrooms
In staff and offices residences, all bathrooms and bedrooms must have a lock that can be locked from the inside.
Key control
Maintain strict key control on all main door (exterior) locks. This means knowing who has access to keys, where they are being kept, that they cannot be copied, etc.
Do not hide an extra key to an exterior lock outside the house; experienced burglars know all the hiding places.
Always change locks if keys are lost.
Lock all utility boxes (electricity, gas, water) located on the exterior of the residence.
Keep a spare set of keys in a sealed envelope in a secure place in the office (safe, key box, etc.)