Teens Turn 'Repeller' into Adult-Proof Ringtone
by Melissa Block
The war between teens and authority figures has a new or old front: ears.
British shopkeepers tired of teenage loiterers have turned to the Mosquito teen
repellent, which emits a high-pitch frequency that most teenagers can hear but
not most adults.
But now teens have struck back against the Mosquito: They are using the same
sound to communicate without adults' knowledge.
At issue is a text-message ringtone that emits the same pitch as the Mosquito.
Using it, students can learn about a new message while they're in class where
they're not supposed to be using their cellphones. Most of their teachers can't
hear the alert.
Inventor Howard Stapleton, creator of the Mosquito teen repellent, says only a
few people over age 30 can hear the Mosquito's sound. He and his 16-year-old
daughter Isabel talk to Melissa Block about the sound, which has been dubbed