Is there any hardware which enables iPads and iPhones to be used as a display for other devices? I know, that is it possible to use these devices as a wireless device for Mac or PC, which has the required software drivers, but what about devices like old computers, VCRs, DVD players, etc? I want to use my iPad as a monitor for my iPad.
What I imagine is an „adapter” which plugs into Lightning, and has RCA/VGA/DVI/HDMI inputs and an app which is capable of displaying the content. Is there any company who has created „adapters” like this?