Authentication on Android Apps?

I have been building an application on android and wanted to do some user authentication using twitter oAuth. But is there any service by google which will allow user authentication easily? Could you please let me know if any o开发者_如何学Gother services exist for android ?

Regards, Lalith

I haven't tried it but I believe you can use openid authentication which accepts google login too. Details about openid with google is here: http://code.google.com/apis/accounts/docs/OpenID.html