An expensive way to thwart spies
Anti-surveillance gadget uses sub-human ear frequencies
As we've seen with such diabolical (though tasteful) products as the "," one can never be too careful these days when it comes to surveillance issues, even in the home. Or perhaps in the home.
That's why items such as the "Tape Recorder Blocker" exist. The newest counter-surveillance offering from U.K.-based Spycatcher blocks digital eavesdropping "by emitting a sub-audible tone which cannot be detected by the human ear but will drown out any recordings when played back." Kind of a canine-frequency anti-spying device, we suppose.
We were tempted to bite but choked on the price: 2,232.50 pounds, or more than $4,400. For that kind of money, we could just buy a crate of "" and jam everything in the neighborhood.