Teens have come up with an ingeneous way to keep their cell phones on in classrooms without their "elders" being able to detect the phones ring.
They have turned the tables on us by using high frequency ring tones that many adults cannot hear. This technology "was the offshoot of an invention called the Mosquito, developed last year by a Welsh security company to annoy teenagers and gratify adults, not the other way around."
Read the NYTimes article here.
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