Here you can log into you Google account. This allows you to save images to your Google drive while the project is running.
The idea of this is to use Google drive as a backup for the project images.
For example if you have a Phone running Phonelapser in a position where it may be damaged for example say extreme weather, even if the phone id damaged or lost you will be able to retrieve your session images.
You can also use this as a way to view images of a running project without disturbing the phone.