Taylor Hughes wrote:

That is why it behooves merchant to diligently check those signatures
and hang on to receipts with the signatures on them. If they accept
credit cards without signatures (e.g. at a self-fueling pump) the
risks are increased and the benefits of increased legitimate sales
need to offset those risks.

Which almost none of them do. I know this because written next to my
signature on all of my cards are the words, "Check ID" in bold print. If one
were to look at the signature they could in no way miss it.

In the 15 - 20 years I have been putting this on credit and debit cards only
once has it ever been done.