I think what confuses the matter is that people sometimes use "credit card" and "debit card" interchangeably. Most Americans with a checking account have a debit card from their bank, for which you are assigned (or choose) a PIN, and you use that card and PIN to get cash from ATMs as well as make purchases (which are automatically deducted from your checking account). I just noticed that my new-ish debit card has a chip in it. I suppose this means I can insert the card and then enter my PIN, though I have just been swiping it so far, as my old one did not have a chip.
This is different from credit cards, which in the past you always had to swipe, and then you would have to do some combination of showing your ID, signing the receipt, or entering the billing zip code (I've only seen this at gas stations). These now have a chip, so you don't have to swipe. However we do not have PINs, so you still have to sign the receipt.
The silly thing about the way that this has been implemented, from what I've noticed so far, is that they've made no incentive to use the chip. People are still preferring to swipe rather than insert their card. Inserting actually takes longer (it says something like "please do not remove card" for several seconds, as opposed to swiping which is instant) so people just aren't doing it. At our local Target, when they first got the chip readers they were requesting that everyone insert rather than swipe, and the lines were backed up for quite a ways, as it just plain took longer. You could feel the irritation level rising. Next time I went they actually started requesting the opposite, saying "if you swipe it won't take as long." A similar thing happened at Trader Joe's, they got new chip readers but instead this time the process was taking longer whether you inserted the card or swiped. It was a terribly long wait and managers were pacing about looking frazzled. I don't know what has gone wrong here, whether the software/machines were designed poorly or if being able to enter a PIN speeds up the process, but so far the implementation doesn't seem all that successful.
But isn't that some of that down to adapting to a new way of doing things. it just takes longer to do something you are not used to do something. Once you are used to doing it it becomes easier and second nature.
In the old days of signature cards it was
1.>Hand card to cashier
2.>Cashier swipes card.
3.>Hands customer pen and reciept to sign
4.>Customer signs receipt, hands it back to cashier
5.>Cashier has to check signature and hope it's still legiable after years of use.
6.>Cashier hands card back to customer
Wih Chip N Pin
1.>Customer inserts card
2.>Customer enters PIN
3.>Customer removes card
In the case of Chip N Pin, the card never leaves the customer.