A key component of HushMe's operation is the "masking noise" the gadget feeds to its surroundings, thus covering the dulcet tones of your muffled, sweaty conversation. Here are some of the fine, fine sound options the gadget offers to blast towards your fellow man as you discuss whatever people who still make phone calls talk about these days (cheese? John Cheese?):
Monkey sounds? Minion sounds?
Don't take my cynical approach to mean that I believe that the product doesn't work. On the contrary -- I believe that the technical concept is solid, and that it certainly drowns out your important conversations from unwanted eavesdroppers. It's just that the HushMe attempts to solve a problem that not a single person on the planet has ever had since cell phones were invented and people became free to have their phone calls wherever the hell they like.
Then again, if you intend to deal with your phone security issues with a half-face mask that you mumble in while its exterior speakers blast out fucking Minion noises at the outside world, privacy is going to happen naturally, as everyone around you takes several cautious steps away from you ... followed by outright sprinting and screaming.