Cards that get input into the electronic device so I can try to use that in place of the card? Well, it's better than writing a check, but is otherwise completely unappealing.
So you are saying you haven't tried it. I have and you should give it an honest try. At the risk of sounding like a fanboi, ApplePay is easily the most convenient means of paying I've used and I now use it whenever I can. Easier and faster than cash and WAY better than swiping a CC. No (dirty) change, no signature required (usually), more secure than a plain CC, I don't have to give my ID to the store clerk, and I don't need a wallet. It works smoothly and quickly. I'm not always a fan of Apple's products but they hit the mark with ApplePay.
Now I'm NOT bashing cash. Cash is super useful sometimes and I think it's a vital financial tool, especially in certain circumstances like emergencies. But Apple and Google's smartphone payment systems are excellent and underutilized. I think Tim Cook targeting cash is missing the mark. What he should be targeting is replacing the need for a wallet. I sometimes need cash but I could happily do without having to carry a wallet 99% of the time. There is no reason my smartphone couldn't also serve as my wallet, insurance cards, credit card, driver's license, library card, etc. We could still have plastic cards and cash for when we need them but why do I need to carry them with me all the time? Makes no sense.
Anyone who still uses checks is just an idiot who is unwilling to grow up and join the 21st century. Why checks are still a thing absolutely baffles me.