@edgarblythe,
You know, my credit card company told me I HAD to sign the back of my card, lol... I said, Why would I do that? It just helps someone forge my signature.
That was back in the day, of course, when they used those swipey things for your card and I don't recall any customer service person ever asking to see my signature. I never sign any of my cards even though today it's just a tap or insert - your signature is pointless.
I haven't seen anyone write a cheque in years! We write two a year to the CRA (Canada Revenue Service) and that's it.