• By Jack Loftus
    Jul 12, 2009 5:00 PM 16,236
    more about

    #ultrasonic

    Mega Sonic Scatter-Cat Blasts Dogs and Cats Off Your Lawn, But Not Those Damn Teenagers

    Kids Be Gone Ultrasonic Teen Deterrent: Sounds Like Teen Spirit?
    read more: #ringtones, #ultrasonic, #ultrasonicringtones, #notifications

    12 Ultrasonic Ringtones For Your Nearly-Silent Listening Pleasure

    The kiddies have been using ultrasonic ringtones to secretly take calls/texts in class since 2006, but if you're an adult who can still hear these frequencies then by all means head over to Lifehacker for some of your own [Lifehacker]


    Send an email to Jack Loftus, the author of this post, at jloftus@gizmodo.com.