That seems a little absurd, no?
If a person whom you’ve gotten a Restraining Order on visits your house while you’re not home, but doesn’t technically step onto your property, or who (because your property is unmarked) steps only a few feet over the line, you’d still consider them to be violating their Restraining Order, yes?
They know not to go near you or your home, but they do it anyway and then try to get out of it by saying “But it turned out you weren’t home, so I wasn’t actually within X feet of you!” or “I technically wasn’t on your property!” or “I technically was on your property, but that doesn’t matter because it wasn’t clearly marked so I didn’t realize!”.
These are all mealy-mouthed excuses. If someone has a Restraining Order on them, they know better than to go to your home, your work, or anywhere else that they might reasonably expect you to be.