What does this even mean? Who would “check”, and why? It makes no sense. If someone says I signed for a delivery or agreed to a contract, I guess they’d confirm the existence of a signature before filing it away, if that’s what you mean… But again, if it wasn’t me, I could easily prove that signature doesn’t match my past signatures and dispute it with my bank or in court. To reiterate: a random delivery person won’t know what my signature looks like.