If you have subway reward card then you can easily register my subway card account. You can register your account by providing your card details in the registration process. You can use this card to order delicious food at subway by online ordering service or at restaurant. By making payments through reward cardholders will be able to earn points on each spending. You can redeem rewards on your spending by checking collected points via your account. This card account portal help your in managing your account by tracking card transactions, card balance and other services.
If you want to check subway card balance then you can approach these different methods.