Can polarizing film reflect light instead of blocking light?

I was thinking about how to electorally switch glass between transparent and reflective just out of curiosity. I thought that maybe you could polarize the reflective glass in the vertical direction and polarize the light hitting the glass in the vertical direction as well, then have a layer of liquid crystals selectively reorient the light into the horizontal direction which will cause the light to be reflected back. Is this possible?


