So… * Didn't realize I had the name and expiration field to enter as well. I thought it was just show casing the number entry. It wasn't until I came back here to HN to read comments that I realized that there was more to the demo. * Tab order was wrong. * 1Password couldn't fill in the data. * No indicator telling me what credit cards you accept. * CVV was hidden. There were several cases where I'd finished filling…
Exactly. This isn't a usability improvement, it's fluff.
If you want to see an actual usability improvement, look at what Stripe has done with jQuery.payment: https://github.com/stripe/jquery.payment A good example is in their Checkout javascript component: https://stripe.com/docs/checkout