Some cards have 19 digit numbers. (If all the cards you accept always have 16 digit numbers then you don’t have to worry about that, of course.)
I find that intensely annoying. I type 4 digits; press the tab key; start typing the next 4 digits; realise that the page had automatically taken me to the next box, so I’m typing into the 3rd box instead of the 2nd;…
Some cards have 19 digit numbers. (If all the cards you accept always have 16 digit numbers then you don’t have to worry about that, of course.)
I find that intensely annoying. I type 4 digits; press the tab key; start typing the next 4 digits; realise that the page had automatically taken me to the next box, so I’m typing into the 3rd box instead of the 2nd;…