International Terrorist and insurgents to detonate bombs to kill innocent people have used cellular phones. These devices could be used as partial components of weapons or in plots for aircraft suicide bombing missions as well. I propose a device in airport terminals, which will send out a harmonic test using directed sound as the carrier of the cell phone passes by. When the person says hello, hello, hello their voices are recorded against the NSA database of voices on their watch list. Additionally I propose that all bags on the conveyer belts also have a choke point, which is bomb resistant with a harmonic signal sent attempting to contact the phone. If a suicide bomber is on the plane and leaves his cell phone connected to a bomb underneath he could use this to detonate the bomb on the plane he is on, but if it goes thru a pre-detonation device system on the conveyor belt it will be eliminate and a disaster prevented.

Similarly if a cell phone does not ring then once the passenger comes up to the check in he will be further scrutinized and the phone checked to a larger degree, to insure it is not going to be used as a detonation device. If the phone does not ring; 1.) it is not a phone but rather a small bomb of plastic explosives or 2.) it is turned off and must be turned on and checked prior to boarding.

A harmonic pre-detonation device will either ring peoples phones or it will set off a bomb, which was meant to down an aircraft, kill innocent people and further propel the Al Queda message. Therefore a simple system can be installed to further protect the airline traveler without any additional due hardships on personal freedoms. Think on this.