Very secure

He drove his Ferrari to his multi-million dollars home
Up on the highest hill
Pressed the code to open the garage door
Out of the car
Pressed the code to give access to the elevator
Accessed the second floor
Pressed the code to open the glass doors
Giving access to the long corridor at the end of which
He pressed the code giving access to the spacious living-room
On a CCTV screen, saw movement outside.
Shadows lurking by.  Not to his liking
Pressed the code to his safe room, much alike a bank vault
Also pressed the emergency button

Finally safe inside
But then his heart decided it was time for it to stop

All codes useless.