[Hanselda]

I am still very skeptical about the usefulness of such film. As far as I can tell, the main problem of the reader is that the contrast is reduced contrast compared to the device without the touchscreen. This effect is due to the absorption of light in the touchscreen, and the reflection of light on the touchscreen surface. The absorption is the effect of a thin indium-tin oxide layer which provides the conductivity of the touchscreen. The dielectric plate of the touchscreen in fact absorbs very litter. This effect cannot be cured by any film on top of the touchscreen.

In principle a anti-reflective film can increase the transmissivity of the dielectric plate. For this one needs a exact matching of film thickness to 1/4 of the wavelength (which means about 130 nm) and the optical index of the film to be square root of the dielectric plate. I highly doubt that this is doable with a sticky film.

And also, the surface of the PRS 600 screen already has a matte finish, the reflected light is diffusive. It is not like a mirror.