Google unveils Android Version 2.3, also known as Gingerbread, on Monday with the first phone running the new OS: the Nexus S. The new version is optimized for game developers, allowing smoother animation and increased responsiveness and better input handling needed by high-speed mobile games. Google also introduced support for so-called touch filtering which prevents UI elements that control sensitive functionality from being enabled at the same time as they are obscured by other UI elements a technique sometimes referred to as clickjacking
Source: https://threatpost.com/android-update-adds-protections-mobile-clickjacking-120610/74739/