"What's Google Wallet? Google Wallet is a new service that allows you to pay for things with your smartphone like you currently do with credit cards. When you're at a store, you'll just be able to tap your phone to a receiver and "scan" a digital version of your credit card to pay for things. The idea is that once the service becomes more popular, you won't have to carry a wallet full of cards wherever you go. Sure you may still need to carry one as a backup, but you'll be able to make many of your purchases just by pulling out your phone." - Lit

"Google Wallet hasn't officially launched yet, but at launch time, it will work at a number of different merchants, like CVS, Subway, RadioShack, and more—many of them even offering loyalty coupons when you use Google Wallet. To see all the places you can use it, check out Google's interactive map. " - Lit