Sony Mobile is rolling out a new feature to Xperia ZR (C550X) handsets called Touch Block. What this feature does is disable the touch screen to avoid unintended touches, such as under wet conditions. You can take calls as normal though as Touch Block doesn’t interfere here.
The app is currently in beta with version 0.1.A.1.0 released. There is also a Small App available for Touch Block to easily enable the feature. Sony may only be making this app available to water resistant handsets, although we’ll have to wait and see. See some screenshots of Touch Block below.