What is the difference between chip and signature and chip and pin?

You may be asked to provide your signature or enter your PIN to complete a transaction when you use your card. You will need to use your PIN at ATMs and it may be required at some unattended terminals such as fuel pumps and payment kiosks. Please note that some merchants are now requiring you to use your PIN for debit card transactions (previously you could select “credit” to sign instead). This change will also impact your HSA card (if you have one). This is why it is important to select and remember your PIN. You are always protected against fraud no matter if you sign or enter your PIN.