Teen Deterrent System

I’ll have to admit this is one I only read about. I can’t say I heard
about (or heard) it, because, truth is, I can’t . . . . . hear it that is . . . . . only younger folks can.
Marketed by the tradename Mosquito, this little gizmo is technically referred to as an “ultrasonic teenage
deterrent system”. It looks much like an ordinary signaling device. Manufactured in the UK, it is distributed in
NA by a company named, Kids Be Gone.
Teenage deterrent? Well . . . let’s just say it is something that is being used to counter what the distributor
describes as teenage antisocial behavior. In other words – “loitering”.
The devices make use of a medical phenomenon known as presbycusis or age-related hearing loss. According to
The Merck Manual of Diagnosis and Therapy this hearing loss, “begins after the age of 20 but is usually
significant only in persons over 65″. It first affects the highest frequencies (18 to 20 kHz) notably in those who
have turned 20 years of age”. So, it is possible to generate a high frequency sound that is audible only to
teenagers. That’s exactly what this lil’ gem does. It generates an annoying sound, heard only by teenagers,
eventually causing them to move away the area being covered.
It is being used in shopping malls and around retail facilities to deter loiters. But it could find application
anywhere kids might congregate and cause damage. So let’s see (remember most of us can’t hear it) where it
might be dealt with.
01 71 13 Mobilization. . . . . . . . . . . . . . . . . Title describes what it is supposed to do to hearers.
09 96 23 Graffiti-Resistant Coatings . . . . . Nice try, but its not a coating, although it might help prevent

graffiti . . at least that applied by non-adults.

10 81 00 Pest Control Devices . . . . . . . . . . Depends on your definition of “pest”, Must admit it works
on the same principle as some devices specified here. Would
probably want to create another user-defined level 3 number.
11 52 00 Audio-Visual Equipment . . . . . . . It is audio, but not really the “stuff” addressed here.
11 62 00 Musical Equipment . . . . . . . . . . . Not “music” to certain ears.
13 51 00 Stress Instrumentation . . . . . . . . . It might produce stress of a different kind.
27 41 00 Audio-Video Systems . . . . . . . . . There apparently is audio involved for some.
27 51 13 Paging Systems No, they supposedly have the opposite effect.
27 51 16 Public Address and Mass
Notification Systems . . . . . . . . . . . . . . . . . It does address a certain audience w/ notification of sorts.
27 51 19 Sound Masking Systems . . . . It is at least masked for some of us older listeners.
27 53 00 Distributed Systems . . . . . . . . . . . Nope, although it may help “distribute” teen hearers

elsewhere.

28 13 23 Access Control Remote Devices . In theory they work to “deter” access to certain areas.
28 30 00 Electronic Detection and Alarm . . We do tend to deal with signaling equipment (bells, buzzers,

and annunciators) here.

32 35 16 Sound Barriers . . . . . . . . . . . . . . Title sounds good, but not the right kind of “stuff” dealt with

here.

As much as one like the thought of something in 108100, I must admit somewhere in Division 27 or 28 is where
this would be best described.

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