Google Sign-in is offered out of the box with Meraki Access Points via the Meraki Cloud. For more information on all of the different splash page options see the Splash Page Overview.
Using the oAuth protocol, Meraki MR access points are able to authenticate users with google accounts via a sign-on splash page for network access control. The administrator can easily setup this integration via the dashboard with the steps below.
Below is an example configuration for this feature which accepts google credentials from the example.com domain.
The Meraki Access points simply redirect an un-authorized user's first HTTP GET to the splash page server which is hosted within the Meraki Cloud Controller. The splash page presents them with the option to log onto the SSID using their google account. Below is an example of the initial splash page where the SSID name is "Example SSID" prompting the user to continue to the google login screen.
The user is then directed to the familiar google login screen that is hosted on google's servers. After the end user enters their credentials they will be either permitted or prompted to re-enter valid credentials.