Would it not be smarter to use the built in safety feature of the door/slide design and ALWAYS, in normal operations, open it from the OUTSIDE?
Then, even though the Cabin Crew check the slides are disarmed as part of the arrival procedure, the slides cannot be deployed accidentally.
There is no rocket science involved in opening a 747 or Airbus door from the outside as no disarming is necessary. Desirable maybe, but not necessary.
Aircraft and door manufacturers designed these things in this way. Why then, do airlines muck with them?
Cls