Which payment method requires the customer to enter a PIN to complete a purchase?

A debit card is the payment method that requires the customer to enter a PIN (Personal Identification Number) to complete a purchase. When using a debit card, the PIN serves as a security measure, verifying the cardholder's identity and authorizing the transaction by linking directly to the customer's bank account. This process helps to prevent unauthorized access and fraud.

In contrast, credit cards typically do not require a PIN for transactions; they may use a signature or other forms of identification instead. Mobile payments can vary in security measures, but often utilize biometric verification or app-based security rather than a direct PIN entry. Gift cards usually require either a card number or a barcode for use, without any need for a PIN from the purchaser. Thus, the need for a PIN is a distinctive feature of debit cards in transactions.