A Transit Card is a smart card used for electronic payment of public transportation fares. It allows users to easily access various modes of transport, such as buses, trains, and subways, without needing cash or paper tickets. Users can load money onto the card and tap it at designated readers to pay for their rides. These cards are often rechargeable and can be used in multiple cities or regions, depending on the transit system. Many transit authorities, like those in New York City or San Francisco, offer special discounts for frequent travelers, making them a convenient option for daily commuters.