I was thinking about how the pine64 and similar boards have this hdmi with touchscreen support outs, might be in the form of capabilities.
By this, my question or purpose of topic is;
Would it be possible to utilize the hdmi out technology available on the android or mainstream (Apple,Microsoft) based cellular devices, by turning them into the receiver of the pine64 board's hdmi output? Would it be possible to flash old android hardware to be a fully featured touchscreen for that specific and expandable purpose? or, are there any ways to utilize the digitizer (touch-screen) from olde