A Transparent Sheet that can Block Mobile Phone Signals
A new transparent film for windows has been developed which is claimed can block or seriously degrade radio signal penetration. While aimed at companies seeking to secure internal wireless communications, doubtless some organisations will investigate the possibility of using this to block mobile phone signals. CPFilms, a unit of Solutia sasy that patented technology built into LLumar Signal Defense film reduces electronic signal leakage through windows, a building's point of least resistance, by serving as a transparent barrier that allows light to pass through, while minimizing transmission of wireless (WiFi), radio frequency (RF), and other electronic signals.
Over the past several years, CPFilms says that it has manufactured this high-tech, patented window film for the federal government. The film has been installed on more than 200 buildings within various federal agencies, including the Department of Defense, Department of the Treasury, and Department of State, as well as at facilities within the executive branch and at residences of senior government officials.
