Jamming Equipment on Pakistan President's Limo Delayed Bomb, Saved His Life, Officials Say
Equipment installed on the Pakistani leader's limousine to jam devices that trigger bombs probably saved him from an assassination attempt over the weekend, intelligence officials said Wednesday.I've heard of using high powered radio waves to set off bombs early (e.g. "Danger Blasting Zone - Turn Off All Radios"), but this is the first I have heard of this.
...
The sophisticated bomb - initially estimated to contain 550 pounds of explosive - was believed to include both a remote control and a timing device to trigger it, two intelligence officials said.
The equipment in Musharraf's car jammed the timer for about a minute, and also jammed the remote control, the officials said.
The jammers usually work by emitting a magnetic impulse to block frequencies used to trigger explosive devices - including the electronic signals from precision timers.