Initially, this was a security thing to deter kids from gathering in shopping malls and communal areas. It’s a harmless, very high frequency sound bite that only people under 25 can hear the older you are above the age of 26, the ability to detect this sound decreases! Bizarrely, tech-savvy kids have hijacked this sound and turned into a silent ringtone. And since most high school teachers would be at least 30 years old, they can safely bet that no teacher would hear their phones ring.

The_Mosquito

Only problem is…how do you know whose phone is it when more than one phone is ringing at the same time?!

Try it out here!

WARNING!
If you can hear it, it can be terribly annoying.
If you can’t hear it, it’d be a terrible reality check.
So listen at your own risk.


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