Google has announced that Discover Card has become the first card company to adopt their Save to Wallet API for Payment Cards.
This means that you can now add your Discover Card to your Google Wallet account right from Discover website.
There is no need to add the card details manually. Discover would ask for your account details and do the needful.
Discover securely transmits all required information directly to Google Wallet. You can then select your Discover Card to be the primary method the Google Wallet app will use for in-store purchases, or when shopping online from Google Play or other merchants that accept Google Wallet. You’ll continue to earn rewards on every purchase you make. Discover has also provided Google Wallet with card imagery for the Discover More® Card, so you can easily identify your virtual Discover card in your mobile wallet.