Google has been adding Single Sign-On support to lots of its iOS apps in recent months, making it easier to sign into Google apps on their iPhone or iPad. With Single Sign-On, users can sign in once in any Google app supporting the feature and will automatically be signed into all the other apps. The idea is to eliminate having to sign-in multiple times to the same Google account for different apps. The latest app to get the update is Google Play Books, which was updated today to version 1.6.1 with support for Single Sign-On and copying selected text.
Added support for Google Single Sign-On, so that you only need to sign in once to access all of the Google apps on your device.
Added support for copying selected text, if copyright allows.