I have to layout a media player for a touchscreen in hospital. The main feature has to be the accessibility. The touchscreen is thought to be near the bed of sick people. Not only invalid people but general sick people (so i think that also relaxing color palette could be an issue).
I am not very much in the field of user experience so i'm asking here for some advice that go beyound my idea of "big buttons".
Of course i'm also interested in the psycological/gestalt/usability law beyound the advice, on the answer.
The touchscreen dimension are like a 13" screen and the resolution in 1024x768. The player of course will be at full screen mode.
The important part of the gui is that all elements (volume slider, playlist items, pause stop play, progress bar) must be clickable with the fingers (and that's why i thought to "big buttons") for a persona that is lying down on bed. Particular kind of motion disability are not important for the standard prototype available to all the patients.