How safe is Google Pay service?

The service will create a unique virtual card number for you. Your name or card details will never be displayed in the application and the store has no access to them. Google saves your payment details on secured servers and encrypts them using SSL technology being a standard in the sector. If you lose your telephone or they steal it from you, you can simply find it, lock and delete using the Find my device service (google.com/android/devicemanager).