One-way reflective glasses are glasses that appear reflective on one side and transparent on the other. This is achieved by applying a thin layer of reflective material to one side of the glass. The amount of light that is reflected and transmitted by the glass depends on the thickness of the reflective layer and the amount of light that is available on each side of the glass.

One-way reflective glasses are used in a variety of applications, including interrogation rooms, police stations, and security checkpoints. They can also be used in homes and businesses to provide privacy without blocking out natural light.