Loud Anti-Animal / Children Frequency on Bernal Hill (no joke)

Is that some sort of 'stay off my lawn, kids' campaign? It shouldn't necessarily be allowed.
Here is a new weapon under development. It is surprising to learn that there are sound frequencies and there is a laser light quality that will produce these nausea effects. While I prefer use of this to firearms, if you think about it, it seems like the very next step would be for private users to copy the light quality, or for irresponsible security guards to overuse it out of malice. I mean, it is rare for people to use laser pointers to cause airplane accidents even though they know it is possible, and the homeowner could spread poison or do false police calls against the kids on his lawn too. So it won't necessarily be worldchanging when such methods become available. http://www.photonics.com/Content/ReadArticle.aspx?ArticleID=37655

"Teen-repellent" as if children are insects to be swatted away...


Since the launch of the first model Mosquito in January 2006, over 8,000 units have been sold around the world. Customers range from police forces and local authorities through large national and international retail stores to small independent shops, factories, commercial properties and even banks and car parks.
http://compoundsecurity.co.uk/

The Mosquito Anti-Vandal System is the solution to the eternal problem of unwanted gatherings of youths and teenagers in shopping malls, around shops and anywhere else they are causing problems. The presence of these teenagers discourages genuine shoppers and customers’ from coming into your shop, affecting your turnover and profits. Anti social behavior has become the biggest threat to private property over the last decade
http://compoundsecurity.co.uk/mosquito-products-0


Starting to fight back against the hateful geezers...
http://www.indymedia.ie/article/86200


Emitting high-frequency sounds with malicious purposes should be illegal. How many of these things are in SF? How many on private residences? Someone should interview this fucker on Coleridge and hear what kind of shit oozes from their mouths. This is obnoxious and should not stand.

This sounds more like a human interest story for the SF Bay Guardian or something.

Is it known that it's an older person? I visualize stuff like that connected with a recent transplant who ended up not liking the density of this city.