>"ANY security system, door lock, etc. should
be easy to circumvent to
 >avoid any inconvenience when the user can't comply with the "normal"
entry
 >requirements." 
  Your summary sounds like the Microsoft approach to
security :^) 
Exactly who I was ridiculing.  (why there were quotes)  Well, them and a
few others as well.
"It won't let me login"
"Just hit escape and it will let you in without a password".
I DON'T have a key under my doormat.