A CC Checker does this by automating micro-transactions or pre-authorization pings against payment gateways. If the gateway returns a "Success" or "Authorization Held" code, the card is "live."

The RSO Tools CC Checker is a valuable software for verifying credit card details and reducing the risk of fraudulent activities. Its features, such as BIN checking, card type identification, and validity checks, make it an essential tool for online transactions and e-commerce. By using this software, merchants and individuals can ensure the accuracy and validity of credit card information, promoting a more secure and trustworthy online environment.