Rebecca Lake is a certified educator in personal finance (CEPF) and a banking expert. She's been writing about personal finance since 2014, and her work has appeared in numerous publications online.

You use your credit card on a regular basis to make purchases. While most people know that the numbers on the card are unique identifiers, most of us have no idea what they actually mean. Credit card ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Investopedia / Matthew Collins Reference numbers commonly include random numbers or letters ...