For every access
Fewer keys, greater security. We have too many keys nowadays and finding the right one can be difficult and time-consuming. There is no control over some rooms because the keys have been lost. We need more effective key management.
Immediate escape. In an emergency it must be easy for everyone to get out.
Preventing thefts. Thieves could try and break into the building through the emergency exit: we need tighter security.
Access to sensitive areas