모바일캐시비 is a mobile transportation card service that offers a convenient alternative to plastic transportation cards. With just a smartphone tag, users can access public transportation and make purchases at affiliated merchants nationwide. The service provides various features, including online charging and online merchant usage.

One of the key features of 모바일캐시비 is its prepaid charging service. Users can pre-charge their accounts and even set up automatic charging. The service supports multiple charging methods, such as credit/debit cards, mobile micropayments, bank transfers, gift cards, and convenience stores.

In addition, 모바일캐시비 offers a postpaid service where users are billed only for the amount they have used. Users can register their credit cards for this service and enjoy full exemption from charging fees. The service also extends the same benefits to users who register credit cards that offer public transportation discounts.