User interface (UI) manipulation techniques are disclosed that can allow a user device to hide and obscure sensitive information displayed on a flexible, foldable, or otherwise reconfigurable display from onlookers whilst maintaining or improving its accessibility exclusively to the primary user. Examples of the disclosed techniques can manipulate the UI in a way such that it is largely only viewable as intended when the user device is physically configured to a certain folding angle (and/or viewing angle). In some examples, the UI can be customized such that it promotes a certain device configuration (e.g., folding angle) that can provide an optimum security configuration for the user's current surroundings. The UI displayed on the display screen can change in form factor (e.g., an intended size as viewed by the user) to adapt to the current surroundings and/or based on the sensitivity in the displayed content.