Well porcine skin samples can be obtained post mortem for testing easily. Pig’s skin has a similar dermal/epidermal thickness ratio to humans and can be worked with without posing any human risk. Especially if this would be a quick proof of concept.
From what I’m seeing the e-ink requires 8.0X10^-3 J/cm^2 for a switch of the display. If the entire display were encapsulated would QI charging be able to satisfy that? (I know almost nothing about QI) I imagine the switch would be in the order of milliseconds so the wattage would be very low right?