Society & Culture
There are many credit card companies that will offer you cash back rewards for credit card purchases that are made using your card. For a lot of those companies, if you use the credit card as a debit card you will miss out on some of those rewards and also have to pay transaction fees.
The credit card companies encourage the use of non-pin transactions because it helps to fight against and prevent fraud. If you are asked to enter a pin number for your purchase, then you can be certain that the purchase is being counted as a debit card transaction instead of a credit card transaction, since credit card transactions do not require pin numbers.
Click on the link to know more about the credit cards without a Pin: