Wojciech Trocki thanks for the information, I got it working now, and I have verified that it supports SSO for android. I haven't tried for ios though.

I have 2 branches for them:

1. https://github.com/wei-lee/ionic-showcase/tree/try-cordova-native
2. https://github.com/wei-lee/ionic-showcase/tree/sso-test

Each branch will build a new app configured to use cordova-native plugin. If you install them both on the same device, you will be able to perform SSO.