i asked this question before but since then multitasking got officially available for the ipad so things might have changed.
i am looking for an app that can run in the background and allows scribbling on the screen of the ipad regardless what it shows and/or which app is open.
the reason for this is i need the possibillity to scribble on photos and xrays. as there still is no automated picture import and some other reasons also speak for mirroring the screen of the computer i would use the ipad to display the images. i could use a programm like omnidazzle on the computer as well but i think things get a bit messy then
thanks for the help