A skimming device is a small electronic tool used to illegally capture data from credit or debit cards. These devices are often placed on ATMs or point-of-sale terminals, allowing criminals to collect card information without the cardholder's knowledge. The stolen data can then be used for fraudulent transactions. Skimming devices can be difficult to detect, as they are designed to blend in with legitimate equipment. To protect against skimming, individuals should regularly check their bank statements, use secure ATMs, and be cautious of any unusual attachments on card readers. Awareness is key to preventing identity theft and financial loss.