Enabling Screen Pinning is the best defence against patient misuse of tablets.
Pinning the Ocean Tablet application will inhibit patients from navigating away from Ocean while using the the tablet. Pinning disables the physical buttons on the device, as well as the notification area that can normally be accessed by swiping down from the very top of the screen.
Please refer to the "Enable Screen Pinning" section of the Securing Your Tablets guide for instructions.