In security of systems you would call the design “Fail open”. They are many systems that fail open. An example of fail open design in the real world, is electr

In security of systems you would call the design “Fail open”. They are many systems that fail open. An example of fail open design in the real world, is electronic magnetic locks at apartment complexes or business buildings. If the building loses power the doors demagnetize and unlock, then indefinitely remains open but failing because it is always open now. The opposite would be the building loses power and the doors fail close and lock the doors indefinitely when power is lost, and now people can’t escape.