The Fraunhofer Institutes in Germany have just created a security window that detects if someone is snooping on the other side of the glass . To achieve this, engineer Burkhard Elling and his team have coated the glass with nanoparticles that convert light into fluorescent radiation. According to Elling, the mechanism is activated when the invisible light of an ultraviolet lamp “illuminates” the window, and generates a fluorescent radiation that is detected by a sensor system placed in the frame. If someone approaches the window, the light is dimmed, and the sensors are activated. They can even identify the size of whoever is on the other side, as well as how fast and in which direction they are moving. “In this way we can program the window so that if it is a small bird on the other side of the glass, or a car has passed, the alarm does not go off,” the researchers explain.
The system will be very simple to install, since it will be enough to apply the innovative covering with a brush or spray on the glass to turn a normal window into a “surveillance window”.
