Final answer:
A skimming device is a tool used by criminals to steal credit card or debit card information. It is recommended to always be vigilant when using an ATM or a card payment terminal.
Step-by-step explanation:
A skimming device is a tool used by criminals to steal credit card or debit card information. It is typically placed on an ATM or a point-of-sale terminal and is designed to capture the cardholder's data, including the card number, expiration date, and sometimes even the cardholder's PIN.
There is no fixed frequency for checking for skimming devices, as criminals can install them at any time. However, it is recommended to be vigilant whenever using an ATM or a card payment terminal. Look for any suspicious devices or loose attachments, and always cover the keypad when entering your PIN.