Stephane,
>snip<
I believe someone also mentioned this but IMO what is needed would be a sort of 'man trap' consisting of two doors, both lockable and controlled from the cabin.
Of course that wouldn't be practical given current designs. I suspect that this will take some time to sort through...
Best,
DD
A man is no fool who gives up that which he cannot keep for that which he cannot lose.
Everything I don't understand must be easy!
The difficulty of any task is measured by the capacity of the agent performing the work.