There are other scenarios. Apparently (I do not own a car, so forgive my ignorance), it is possible now (at least above a certain price) to unlock your car remotely via smartphone or something. Imagine a criminial organization gaining access to a car manufacturer&#x27;s network so they can steal cars.<p>Some people apparently like the idea of being able to lock&#x2F;unlock the front doors of their houses&#x2F;apartments via smartphone app. I am not certain how this is more convenient than getting a key out of your pocket, but it doesn&#x27;t matter - the same scenario applies. These are probably going to be &quot;cloud&quot;-based, so if someone can compromise the servers, they can now gain access to entire neighborhoods. (Or, alternatively, lock the doors, keep the people inside.)