I was actually surprised I could hear it as I'm 38. :P
This reminds me of an anti-yob/chav device I saw on the news. It's placed in areas where such types hang out, and constantly emits a high frequency noise that young people (below 20, or something) can hear and find painful, but older people can't hear at all. Cool! :P
This reminds me of an anti-yob/chav device I saw on the news. It's placed in areas where such types hang out, and constantly emits a high frequency noise that young people (below 20, or something) can hear and find painful, but older people can't hear at all. Cool! :P