Isn’t a transparent monitor just a window with a HUD? My first thought was that this could have exciting use-cases in vehicles. However, aside from nighttime driving, the relatively poor brightness would likely quickly rule it out. Anyway, for a fun thought experiment, if I were thoroughly reviewing it for use I’d be most curious about its visual clarity when off (and perhaps durability, but to a lesser extent). How exactly does one measure contrast ratios when you have no idea what you’re contrasting against?