[franga2000]

This is cool, but the last two just awful. The most annoying part of typing in credit card info is getting into the flow of typing in numbers from a card, then having to switch to "number to month name, then scan a dropdown", then to "convert two to four digit year and scan another dropdown of seemingly random length", then back to typing numbers for the CVC. On a computer, you need to switch between keyboard and mouse and back, on mobile your keyboard open and closes, reflowing the whole window and moving elements around a handful of times.

In contrast to a "just type it" date picker (as in example 4) and staying in "just typing numbers" mode the whole time.