As part of the risk assessment for ISO27001, the possibility of users taking screen captures of the android phone was recognised as a possible risk.
Control
A possible control of this risk would be to restrict the ability of users to take screen grabs using the native android controls. This technique is outlined here:
12 pull request add this feature. When the user is using the app and tries to take a screenshot they will be presented with an error informing them that what they are trying to do has been prevented by the application.
Overview
As part of the risk assessment for ISO27001, the possibility of users taking screen captures of the android phone was recognised as a possible risk.
Control
A possible control of this risk would be to restrict the ability of users to take screen grabs using the native android controls. This technique is outlined here:
http://stackoverflow.com/questions/9822076/how-do-i-prevent-android-taking-a-screenshot-when-my-app-goes-to-the-background