First, download the Google Pay app from the Google Play™ Store. If your Peninsula card is already linked to your Google account, you can simply add it to the Google Pay app by confirming a few details. To add a new card, it’s as simple as snapping a picture. How do I pay with Google Pay? Unlock your device (no need to open the app). Hold the back of your device near a contactless payment terminal. Your phone will beep or vibrate, and you’ll receive a confirmation on-screen letting you know the payment was made.