How is a credit card typically activated by a cardholder?

A credit card is commonly activated by the cardholder by calling a designated phone number provided on the card or a related sticker, where they verify their personal account information. This method ensures that the person activating the card is indeed the authorized cardholder, as it often requires confirming details such as the card number, social security number, or other identifying information.

This process is designed for security reasons, allowing banks to authenticate cardholders' identities prior to allowing them access to their accounts. While some newer cards might utilize methods like activation through online banking or apps, the traditional method of calling remains a widely used and secure practice.

Other methods mentioned, such as using a vending machine, automatic activation upon usage, or in-person visits to the bank, are either impractical, not standard practice, or not applicable for the majority of credit card issuers. Therefore, the verification process via a designated phone number stands out as the most accepted method of activation.