Android users with Android 4.1 or higher have been able to track packages using Google Now, which receives the information from their email and shows them the status of any online orders on a card. Besides offering users the ability to tap and pay at participating retail outlets, Google Wallet will also keep track of any loyalty programs that users have signed up for.
The app can also track a user's location to promote special offers available at nearby retailers. Those that don't want Google Wallet to have their current location can merely disable the feature.
source: GoogleWallet (iOS|Android) via Google+