Apps Login System using Gmail

[Mullanimal]

I'm looking to create an application for my university which will allow users to comment and check-in to places, similar enough to how Foursquare operates.

I've just one question, when creating a login system, would it be possible to just have users login just by using their gmail account? So instead of making a server which has all these users registering to the server, could they instead just simply login with their gmail account, removing the need to register with the application at all?

Thanks!

 

[jiminaus]

You might want to look into OpenID. OpenID Foundation website