You stole that man's signature.

It was never a security feature. It's an anti-fraud measure.

It only comes up when you dispute a charge, otherwise there's generally no reason to inspect the signatures.

There is value to always signing in a consistent and identifiable way, because then if you dispute a charge and the signature is substantially different from how you normally sign, that supports your dispute claim.

It's actually a good idea to do something more distinctive than just your name in cursive, as that's likely what someone using your card for fraud would sign with.

Definitely security theater, ive no clue under what circumstances a signature is checked or really even seen. I mean i think the clerk at the store can see it but then what? Lmao

Yeah, my handwriting has always been shit, and they were still teaching cursive when I was a kid. I just do the seismic wave thing and pretend it's a signature. My spouse has gorgeous handwriting, you'd think it's a digital font from a distance.

Yeah, on discovery they won't say it's the same. They'll just ask if you signed it

Why would just the act be enough? I could still come around the next day and say I never signed those papers, and the proof is my signatures never look the same? (As a hypothetical, normally you'll have similarities still)