Here's the comely Miss Katie from Shiny Shiny demonstrating an odd mosquito- (and perhaps human)-repelling feature on a cellphone. Be sure to turn your sound down before you watch this video, because this thing makes some of the most obnoxious noises we've heard all week. It's called "ultrasonic," but methinks some of that racket is within the range of human hearing.
Since mosquito repelling is so hard to measure, this is a growth area for flimflam and quackery. Buyer beware.– Charlie White