From Kids’ Cell Phones: Ring Tones Fall on Adults’ Deaf Ears

Among kids’ cell phones ring tones, there is one special tone that cannot be heard by adults.  It’s called “Mosquito,” which was originally created by Compound Security Company. The primary purpose of this tone is to gratify adults and annoy teenagers who are loitering in front of stores.  The ear-splitting 17-kiloherts buzzer was marketed as “ultrasonic... Continue Reading