What is the main characteristic of a Debit Block?

The main characteristic of a Debit Block is that it is designed to prevent unauthorized transactions. This protective measure allows cardholders to set restrictions on their own debit cards, ensuring that only approved transactions can be processed. This is particularly important for safeguarding against fraud, as it can halt suspicious or unexpected debit charges that do not align with the cardholder's spending patterns.

This feature enhances security for consumers by providing them with control over how their accounts are accessed and utilized, thus reducing the risk of unauthorized use. It emphasizes the importance of consumer awareness and management of financial transactions in an era where identity theft and fraud are prevalent.

While the other options discuss limits on credit card use, restrictions on specific merchants, or international purchases, these do not capture the primary purpose of a Debit Block, which is fundamentally focused on preventing unauthorized access and transactions through proactive measures put in place by the cardholder.