A debit card is linked to your checking account and allows you to make purchases or withdraw cash directly from your account.

In an interesting twist, Google has introduced a debit card, it announced on Wednesday. Google has been trying to gain traction in the mobile payments business with Google Wallet, a smartphone app.

Users can add money to the app via a Citi MasterCard credit card or a Google Prepaid Card, which can be used with any credit card. To pay for tickets, consumers open the app and press it against a ...