The No Touch Pen ($14.99)
Potomac neighbors Christy Chang and Amy Pepper heard that touch screens can be really germy. To check, they swabbed some of the ones they interacted with regularly — at grocery stores, ATMs, Metro stations. Their findings? A whole lot of E. coli. “You’re touching people’s poop all day,” Chang says. The duo is anti-hand sanitizer: It dries out their skin, making them more susceptible to infection. The solution, they realized, was to invent a product. Its three tips can be used in place of a finger, a traditional pen and a resistive stylus (what you use to sign for UPS packages). It’s antimicrobial, and attaches to a key chain or phone. Buy it online (notouchpen.com) or at Circle Wine & Spirits in Chevy Chase. Chang and Pepper are developing more products.