A Commuter Card is a prepaid card designed for public transportation users. It allows commuters to pay for fares on buses, trains, and subways without needing cash or paper tickets. Users can load money onto the card and use it for multiple trips, making travel more convenient and efficient. These cards are often linked to specific transit systems, such as Metro or MTA, and may offer discounts or rewards for frequent use. Many cities provide options to refill the card online or at designated kiosks, enhancing accessibility for daily commuters.