Having the latest home security system isn't enough to stop determined thieves; you have to have something that will repulse their instincts. Something even Bond wouldn't want to experience. Inferno is a "sonic barrier," a long metallic speakerbar that generates a sound made of four frequencies between 2 and 5 kilohertz. The sound itself is 125dB, which is the typical sound made by an alarm. Extreme reactions that this sound will cause if you are exposed to it for a longer time: vertigo, nausea, and pain in the chest. The device is designed to work with security systems, making people leave a protected area immediately. Their site shows many different models, which can be installed inside or outside shops and cargo vans. Dr. Goldman told us that they "don't do home applications because of the potential headaches that this may bring from law enforcement agencies and customers." Apparently, Inferno is so effective that Swedish manufacturer Indusec just landed a contract with the Russian government to install the sound bars in nuclear weapon depots using the Inferno Mini (above) which is the same you can install in your own shop. Meanwhile, big companies like UK-based chemist super-chain Boots, are also installing the devices all through all their shops. The good thing about Inferno is that, although it will stop anyone from entering an area, they won't injure them (or you.) According to a study on the Inferno by the Royal Institute of Technology in Stockholm, only if you experiment repeated exposures to this kind of noise or if the sound pressure is more than 130dB, your ears could be damaged. Inferno, the paper concludes, doesn't have any risk of hearing loss since its just 125dB.

Apparently, "only homes that have special requirements, like a strong room" can be eligible to install one of these alarms. That's sad, because the cost of a typical system is only $1,800. I would surely spend that much on the security of my family.

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