I’d expect modern cars to use proximity detection which means the fob only needs to be with you.

Like my Peguot has a fairly large fob, but it’s just in the pocket of my jacket. Never leaves it. I guess it’s a problem if you don’t have a semi permanent thing like a jacket you use every day though.

Github actually does that too, in some cases at least.

https://trufflesecurity.com/blog/anyone-can-access-deleted-and-private-repo-data-github

Try making a list without copying every time you add something. Mutability matters then. Imagine copying 10000 elements, or copying 10000 references to items every time something were to be added or changed.