Google's Play Store got an update today that improves both security and functionally when installing and using apps. Version 4.6.16 of the Google Play Store brings forth better in-app purchase protection, as well a password protecting purchases from within the Google Play Store itself. Users now have the option to set password requirements for every purchase made, or unlock purchasing for 30 minutes at a time, or you can never require a password at all.
The update also brings in a new batch install feature that allows users to quickly install multiple apps on a new device without the need for a 3rd party app. This will let users who have upgraded, or changed devices quickly install their most used apps at once, which greatly speeds up the process of setting up a new device. Google has also tweaked the UI a bit as well as fixed several minor bugs.