Most people are unaware of how easily someone can hack into their cell phone. There are devices that allow someone (hacker) to hack into your cell phone by just dialing the number. With this technology, they can also listen to your calls, read your emails and texts, listen to the phone’s surroundings such as conversations going on in the room, gain access to your photos and your social media information or any other information stored on your phone. They can even retrieve your password to your online bank account.
Wireless LANs transmit RF signals beyond the walls that surround them and are vulnerable to signals from outside. These issues can potentially present security risks and efficiency problems. To protect the system and improve operations, RF shielding methods should be considered.
Fundamentals of Shielding
RF shielding inhibit the passage of RF signals through a building’s walls and windows. Wireless LAN product manufacturers have been creating specialized rooms with Faraday cages for years for testing purposes. While these designs do an excellent job at blocking signals, their walls have to be built from the ground up. As result, this solution isn’t practical for use outside of product testing.
When RF shielding is necessary at a facility, RF window films and shielding paint are often used. A wide selection of both products offers varying levels of protection between 40 and 80dB, the frequencies used by wireless LANs. After application of paint to walls and film to windows, a building has a good level of protection for security and performance purposes.