debit cards are combined into a single card, simply called a "debit card" or also commonly a "bank card". These are able to perform banking tasks at ATMs and also make point-of-sale transactions, with both features using a PIN. Canada's Interac and Europe's Debit Mastercard are examples of networks that link bank accounts with point-of-sale equipment. Some debit card networks also started their lives as ATM card networks before evolving into full-fledged debit card networks, example of these networks are: Development Bank of Singapore (DBS)'s Network for Electronic Transfers (NETS) and Bank Central Asia (BCA)'s Debit BCA, both of them were later on adopted by other banks (with Prima Debit being the Prima interbank network version of Debit BCA). Technical features Payment cards are usually plastic cards, and rounded corners with a radius of 2.88–3.48 mm, in accordance with ISO/IEC 7810#ID-1 standard. They usually also have a unique embossed card number conforming with the ISO/IEC 7812 numbering standard, the cardholder’s name and the card expiry date, in addition to other security features. Types Payment cards have features in common, as well as distinguishing features. Types of payment cards can be distinguished on the basis of the features of each type of card, including: Credit card A credit card is linked to a line of credit (usually called a credit limit) created by the issuer of the credit card for the cardholder on which the cardholder can draw (i.e. borrow), either for payment to a merchant for a purchase or as a cash advance to the cardholder. Most credit cards are issued by or through local banks or credit unions, but some non-bank financial institutions also offer cards directly to the public. The cardholder can either repay the full outstanding balance or a lesser amount by the payment due date. The amount paid cannot be less than the ”minimum payment,” either a fixed amount or a percentage of the outstanding balance. Interest is charged on the portion of the balance not paid off by the due date. The rate of interest and method of calculating the charge vary between credit cards, even for different types of card issued by the same company. Many credit cards can also be used to take cash advances through ATMs, which also attract interest charges, usually calculated from the date of cash withdrawal. Some merchants charge a fee for purchases by credit card, as they will